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5388642080640 = 2734572131729331
BaseRepresentation
bin100111001101010010000…
…0110001101011110000000
3201002011000201202102010000
41032122210012031132000
51201241414333040030
615243301421040000
71064213400640500
oct116324406153600
921064021672100
105388642080640
111798345a77a45
127304313b6000
133011ba5ab260
14148b51309a00
1595286e2a860
hex4e6a418d780

5388642080640 has 3840 divisors, whose sum is σ = 26485704907200. Its totient is φ = 1030045040640.

The previous prime is 5388642080629. The next prime is 5388642080699. The reversal of 5388642080640 is 460802468835.

5388642080640 is a `hidden beast` number, since 5 + 3 + 8 + 86 + 420 + 80 + 64 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 16279885275 + ... + 16279885605.

Almost surely, 25388642080640 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 5388642080640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13242852453600).

5388642080640 is an abundant number, since it is smaller than the sum of its proper divisors (21097062826560).

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

5388642080640 is a wasteful number, since it uses less digits than its factorization.

5388642080640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 54.

The spelling of 5388642080640 in words is "five trillion, three hundred eighty-eight billion, six hundred forty-two million, eighty thousand, six hundred forty".