65515050656 has 48 divisors (see below), whose sum is σ = 143702294400. Its totient is φ = 29145953280.

The previous prime is 65515050613. The next prime is 65515050677. The reversal of 65515050656 is 65605051556.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 1963481 + ... + 1996568.

It is an arithmetic number, because the mean of its divisors is an integer number (2993797800).

Almost surely, 2^65515050656 is an apocalyptic number.

It is an amenable number.

65515050656 is an abundant number, since it is smaller than the sum of its proper divisors (78187243744).

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

65515050656 is a wasteful number, since it uses less digits than its factorization.

65515050656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960117 (or 3960109 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 65515050656 in words is "sixty-five billion, five hundred fifteen million, fifty thousand, six hundred fifty-six".