66151510647925 has 12 divisors (see below), whose sum is σ = 82027974248640. Its totient is φ = 52921143327920.

The previous prime is 66151510647919. The next prime is 66151510647991. The reversal of 66151510647925 is 52974601515166.

It is not a de Polignac number, because 66151510647925 - 2⁷ = 66151510647797 is a prime.

It is a super-2 number, since 2×66151510647925² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66151510647925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37371444 + ... + 39101506.

It is an arithmetic number, because the mean of its divisors is an integer number (6835664520720).

Almost surely, 2^{66151510647925} is an apocalyptic number.

It is an amenable number.

66151510647925 is a deficient number, since it is larger than the sum of its proper divisors (15876463600715).

66151510647925 is a wasteful number, since it uses less digits than its factorization.

66151510647925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259532 (or 3259527 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 58.

The spelling of 66151510647925 in words is "sixty-six trillion, one hundred fifty-one billion, five hundred ten million, six hundred forty-seven thousand, nine hundred twenty-five".