65140645016 has 16 divisors (see below), whose sum is σ = 129323339640. Its totient is φ = 30654421120.

The previous prime is 65140645007. The next prime is 65140645039. The reversal of 65140645016 is 61054604156.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239487530 + ... + 239487801.

Almost surely, 2^65140645016 is an apocalyptic number.

It is an amenable number.

65140645016 is a deficient number, since it is larger than the sum of its proper divisors (64182694624).

65140645016 is a wasteful number, since it uses less digits than its factorization.

65140645016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478975354 (or 478975350 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 65140645016 in words is "sixty-five billion, one hundred forty million, six hundred forty-five thousand, sixteen".