42664765788 has 36 divisors (see below), whose sum is σ = 107978482248. Its totient is φ = 14204256480.

The previous prime is 42664765771. The next prime is 42664765849. The reversal of 42664765788 is 88756746624.

42664765788 is a `hidden beast` number, since 426 + 64 + 76 + 5 + 7 + 88 = 666.

42664765788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 692206 + ... + 751317.

Almost surely, 2^42664765788 is an apocalyptic number.

It is an amenable number.

42664765788 is an abundant number, since it is smaller than the sum of its proper divisors (65313716460).

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

42664765788 is a wasteful number, since it uses less digits than its factorization.

42664765788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444354 (or 1444349 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 63.

The spelling of 42664765788 in words is "forty-two billion, six hundred sixty-four million, seven hundred sixty-five thousand, seven hundred eighty-eight".