51665022502 has 32 divisors (see below), whose sum is σ = 79308388224. Its totient is φ = 25235289600.

The previous prime is 51665022491. The next prime is 51665022523. The reversal of 51665022502 is 20522056615.

51665022502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12249498 + ... + 12253714.

It is an arithmetic number, because the mean of its divisors is an integer number (2478387132).

Almost surely, 2^51665022502 is an apocalyptic number.

51665022502 is a deficient number, since it is larger than the sum of its proper divisors (27643365722).

51665022502 is a wasteful number, since it uses less digits than its factorization.

51665022502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 51665022502 in words is "fifty-one billion, six hundred sixty-five million, twenty-two thousand, five hundred two".