74534439187264 has 56 divisors (see below), whose sum is σ = 169034364341568. Its totient is φ = 31943160238080.

The previous prime is 74534439187211. The next prime is 74534439187333. The reversal of 74534439187264 is 46278193443547.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 74534439187264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119409099 + ... + 120031669.

Almost surely, 2^{74534439187264} is an apocalyptic number.

It is an amenable number.

74534439187264 is an abundant number, since it is smaller than the sum of its proper divisors (94499925154304).

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

74534439187264 is a wasteful number, since it uses less digits than its factorization.

74534439187264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889823 (or 889813 counting only the distinct ones).

The product of its digits is 487710720, while the sum is 67.

The spelling of 74534439187264 in words is "seventy-four trillion, five hundred thirty-four billion, four hundred thirty-nine million, one hundred eighty-seven thousand, two hundred sixty-four".