65259357879444 has 96 divisors (see below), whose sum is σ = 157058711040000. Its totient is φ = 21081756491136.

The previous prime is 65259357879439. The next prime is 65259357879487. The reversal of 65259357879444 is 44497875395256.

It is a happy number.

It is a Smith number, since the sum of its digits (78) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65259357879444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13232517 + ... + 17481939.

It is an arithmetic number, because the mean of its divisors is an integer number (1636028240000).

Almost surely, 2^{65259357879444} is an apocalyptic number.

It is an amenable number.

65259357879444 is an abundant number, since it is smaller than the sum of its proper divisors (91799353160556).

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

65259357879444 is a wasteful number, since it uses less digits than its factorization.

65259357879444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4249797 (or 4249795 counting only the distinct ones).

The product of its digits is 9144576000, while the sum is 78.

The spelling of 65259357879444 in words is "sixty-five trillion, two hundred fifty-nine billion, three hundred fifty-seven million, eight hundred seventy-nine thousand, four hundred forty-four".