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1385072051760 = 243451943325981
BaseRepresentation
bin10100001001111100101…
…110100100011000110000
311220102010001102110020000
4110021330232210120300
5140143111421124020
62540143204550000
7202032243121035
oct24117456443060
94812101373200
101385072051760
11494451078891
121a45299b2300
13a07c4c974c7
144b075bbd38c
152606782e090
hex1427cba4630

1385072051760 has 400 divisors, whose sum is σ = 5075637742560. Its totient is φ = 349091389440.

The previous prime is 1385072051729. The next prime is 1385072051819. The reversal of 1385072051760 is 671502705831.

It is a happy number.

1385072051760 is a `hidden beast` number, since 1 + 3 + 8 + 5 + 0 + 72 + 0 + 517 + 60 = 666.

It is a super-2 number, since 2×13850720517602 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 53297970 + ... + 53323950.

Almost surely, 21385072051760 is an apocalyptic number.

1385072051760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1385072051760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2537818871280).

1385072051760 is an abundant number, since it is smaller than the sum of its proper divisors (3690565690800).

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

1385072051760 is a wasteful number, since it uses less digits than its factorization.

1385072051760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26458 (or 26443 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 1385072051760 in words is "one trillion, three hundred eighty-five billion, seventy-two million, fifty-one thousand, seven hundred sixty".