74926358640 has 1440 divisors, whose sum is σ = 331550832960. Its totient is φ = 15488299008.

The previous prime is 74926358627. The next prime is 74926358681. The reversal of 74926358640 is 4685362947.

74926358640 is a `hidden beast` number, since 7 + 492 + 6 + 35 + 86 + 40 = 666.

It is a super-2 number, since 2×74926358640² (a number of 23 digits) contains 22 as substring.

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 287 ways as a sum of consecutive naturals, for example, 1413704854 + ... + 1413704906.

It is an arithmetic number, because the mean of its divisors is an integer number (230243634).

Almost surely, 2^74926358640 is an apocalyptic number.

74926358640 is a gapful number since it is divisible by the number (70) 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 74926358640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165775416480).

74926358640 is an abundant number, since it is smaller than the sum of its proper divisors (256624474320).

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

74926358640 is a wasteful number, since it uses less digits than its factorization.

74926358640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 74926358640 in words is "seventy-four billion, nine hundred twenty-six million, three hundred fifty-eight thousand, six hundred forty".