34128865812 has 24 divisors (see below), whose sum is σ = 79642340512. Its totient is φ = 11375100000.

The previous prime is 34128865777. The next prime is 34128865907. The reversal of 34128865812 is 21856882143.

It is a super-2 number, since 2×34128865812² (a number of 22 digits) contains 22 as substring.

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, 24814 + ... + 262437.

Almost surely, 2^34128865812 is an apocalyptic number.

It is an amenable number.

34128865812 is an abundant number, since it is smaller than the sum of its proper divisors (45513474700).

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

34128865812 is a wasteful number, since it uses less digits than its factorization.

34128865812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297159 (or 297157 counting only the distinct ones).

The product of its digits is 737280, while the sum is 48.

The spelling of 34128865812 in words is "thirty-four billion, one hundred twenty-eight million, eight hundred sixty-five thousand, eight hundred twelve".