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7813995068448 = 25323753127108943
BaseRepresentation
bin111000110110101011001…
…1001100111110000100000
31000200000021202021212010100
41301231112121213300200
52011011030214142243
624341411052502400
71434354040121112
oct161552631476040
930600252255110
107813995068448
112542995562108
12a624a317aa00
13448b19b7829a
141d02b114d3b2
15d83d749d0d3
hex71b56667c20

7813995068448 has 288 divisors, whose sum is σ = 23435517321216. Its totient is φ = 2466851272704.

The previous prime is 7813995068353. The next prime is 7813995068491. The reversal of 7813995068448 is 8448605993187.

7813995068448 is a `hidden beast` number, since 7 + 8 + 1 + 39 + 9 + 506 + 84 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×78139950684482 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71671065 + ... + 71780007.

It is an arithmetic number, because the mean of its divisors is an integer number (81373324032).

Almost surely, 27813995068448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7813995068448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11717758660608).

7813995068448 is an abundant number, since it is smaller than the sum of its proper divisors (15621522252768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7813995068448 is a wasteful number, since it uses less digits than its factorization.

7813995068448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109176 (or 109165 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 72.

The spelling of 7813995068448 in words is "seven trillion, eight hundred thirteen billion, nine hundred ninety-five million, sixty-eight thousand, four hundred forty-eight".