74977784028 has 384 divisors, whose sum is σ = 242211594240. Its totient is φ = 19569392640.

The previous prime is 74977784003. The next prime is 74977784033. The reversal of 74977784028 is 82048777947.

74977784028 is a `hidden beast` number, since 74 + 97 + 7 + 78 + 402 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 116605875 + ... + 116606517.

It is an arithmetic number, because the mean of its divisors is an integer number (630759360).

Almost surely, 2^74977784028 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 74977784028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121105797120).

74977784028 is an abundant number, since it is smaller than the sum of its proper divisors (167233810212).

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

74977784028 is a wasteful number, since it uses less digits than its factorization.

74977784028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 44255232, while the sum is 63.

The spelling of 74977784028 in words is "seventy-four billion, nine hundred seventy-seven million, seven hundred eighty-four thousand, twenty-eight".