65213550500 has 48 divisors (see below), whose sum is σ = 162773030784. Its totient is φ = 22358930400.

The previous prime is 65213550473. The next prime is 65213550511. The reversal of 65213550500 is 505531256.

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, 9312722 + ... + 9319721.

It is an arithmetic number, because the mean of its divisors is an integer number (3391104808).

Almost surely, 2^65213550500 is an apocalyptic number.

It is an amenable number.

65213550500 is an abundant number, since it is smaller than the sum of its proper divisors (97559480284).

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

65213550500 is a wasteful number, since it uses less digits than its factorization.

65213550500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18632469 (or 18632457 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 65213550500 in words is "sixty-five billion, two hundred thirteen million, five hundred fifty thousand, five hundred".