74978475264 has 432 divisors, whose sum is σ = 270937465344. Its totient is φ = 19372953600.

The previous prime is 74978475199. The next prime is 74978475287. The reversal of 74978475264 is 46257487947.

74978475264 is a `hidden beast` number, since 7 + 497 + 84 + 7 + 5 + 2 + 64 = 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 47 ways as a sum of consecutive naturals, for example, 37432087 + ... + 37434089.

Almost surely, 2^74978475264 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 74978475264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135468732672).

74978475264 is an abundant number, since it is smaller than the sum of its proper divisors (195958990080).

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

74978475264 is a wasteful number, since it uses less digits than its factorization.

74978475264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254 (or 2237 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 63.

The spelling of 74978475264 in words is "seventy-four billion, nine hundred seventy-eight million, four hundred seventy-five thousand, two hundred sixty-four".