3865264665650 has 48 divisors (see below), whose sum is σ = 7240741295040. Its totient is φ = 1535089800000.

The previous prime is 3865264665641. The next prime is 3865264665683. The reversal of 3865264665650 is 565664625683.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5456900 + ... + 6124400.

It is an arithmetic number, because the mean of its divisors is an integer number (150848776980).

Almost surely, 2^{3865264665650} is an apocalyptic number.

3865264665650 is a deficient number, since it is larger than the sum of its proper divisors (3375476629390).

3865264665650 is a wasteful number, since it uses less digits than its factorization.

3865264665650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668339 (or 668334 counting only the distinct ones).

The product of its (nonzero) digits is 186624000, while the sum is 62.

The spelling of 3865264665650 in words is "three trillion, eight hundred sixty-five billion, two hundred sixty-four million, six hundred sixty-five thousand, six hundred fifty".