65015660010 has 32 divisors (see below), whose sum is σ = 178328668032. Its totient is φ = 14860722240.

The previous prime is 65015660009. The next prime is 65015660041. The reversal of 65015660010 is 1006651056.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65015660010.

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, 154798981 + ... + 154799400.

It is an arithmetic number, because the mean of its divisors is an integer number (5572770876).

Almost surely, 2^65015660010 is an apocalyptic number.

65015660010 is an abundant number, since it is smaller than the sum of its proper divisors (113313008022).

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

65015660010 is a wasteful number, since it uses less digits than its factorization.

65015660010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309598398.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 65015660010 in words is "sixty-five billion, fifteen million, six hundred sixty thousand, ten".