40432074816 has 84 divisors (see below), whose sum is σ = 124442116368. Its totient is φ = 11552018688.

The previous prime is 40432074799. The next prime is 40432074821. The reversal of 40432074816 is 61847023404.

It is a tau number, because it is divible by the number of its divisors (84).

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, 2139406 + ... + 2158221.

Almost surely, 2^40432074816 is an apocalyptic number.

It is an amenable number.

40432074816 is an abundant number, since it is smaller than the sum of its proper divisors (84010041552).

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

40432074816 is a wasteful number, since it uses less digits than its factorization.

40432074816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297656 (or 4297639 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 40432074816 in words is "forty billion, four hundred thirty-two million, seventy-four thousand, eight hundred sixteen".