65440764590 has 16 divisors (see below), whose sum is σ = 119406985488. Its totient is φ = 25817726016.

The previous prime is 65440764577. The next prime is 65440764629. The reversal of 65440764590 is 9546704456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44821712 + ... + 44823171.

It is an arithmetic number, because the mean of its divisors is an integer number (7462936593).

Almost surely, 2^65440764590 is an apocalyptic number.

65440764590 is a deficient number, since it is larger than the sum of its proper divisors (53966220898).

65440764590 is a wasteful number, since it uses less digits than its factorization.

65440764590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89644963.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 65440764590 in words is "sixty-five billion, four hundred forty million, seven hundred sixty-four thousand, five hundred ninety".