51633659879832 has 32 divisors (see below), whose sum is σ = 129089426583600. Its totient is φ = 17210516375424.

The previous prime is 51633659879821. The next prime is 51633659879839. The reversal of 51633659879832 is 23897895633615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51633659879839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43374543 + ... + 44549054.

Almost surely, 2^{51633659879832} is an apocalyptic number.

It is an amenable number.

51633659879832 is an abundant number, since it is smaller than the sum of its proper divisors (77455766703768).

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

51633659879832 is a wasteful number, since it uses less digits than its factorization.

51633659879832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87948075 (or 87948071 counting only the distinct ones).

The product of its digits is 1763596800, while the sum is 75.

The spelling of 51633659879832 in words is "fifty-one trillion, six hundred thirty-three billion, six hundred fifty-nine million, eight hundred seventy-nine thousand, eight hundred thirty-two".