66151510647924 has 48 divisors (see below), whose sum is σ = 166633295743040. Its totient is φ = 20304544907520.

The previous prime is 66151510647919. The next prime is 66151510647991. The reversal of 66151510647924 is 42974601515166.

It is a super-2 number, since 2×66151510647924² (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 15 ways as a sum of consecutive naturals, for example, 518332462 + ... + 518460069.

Almost surely, 2^{66151510647924} is an apocalyptic number.

It is an amenable number.

66151510647924 is an abundant number, since it is smaller than the sum of its proper divisors (100481785095116).

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

66151510647924 is a wasteful number, since it uses less digits than its factorization.

66151510647924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036792960 (or 1036792958 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 66151510647924 in words is "sixty-six trillion, one hundred fifty-one billion, five hundred ten million, six hundred forty-seven thousand, nine hundred twenty-four".