66649449515032 has 16 divisors (see below), whose sum is σ = 127873943837640. Its totient is φ = 32549731158336.

The previous prime is 66649449515027. The next prime is 66649449515063. The reversal of 66649449515032 is 23051594494666.

It is a super-2 number, since 2×66649449515032² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96874199533 + ... + 96874200220.

Almost surely, 2^{66649449515032} is an apocalyptic number.

It is an amenable number.

66649449515032 is a deficient number, since it is larger than the sum of its proper divisors (61224494322608).

66649449515032 is a wasteful number, since it uses less digits than its factorization.

66649449515032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193748399802 (or 193748399798 counting only the distinct ones).

The product of its (nonzero) digits is 167961600, while the sum is 64.

The spelling of 66649449515032 in words is "sixty-six trillion, six hundred forty-nine billion, four hundred forty-nine million, five hundred fifteen thousand, thirty-two".