51512457266480 has 40 divisors (see below), whose sum is σ = 136875957880992. Its totient is φ = 17661413919744.

The previous prime is 51512457266461. The next prime is 51512457266503. The reversal of 51512457266480 is 8466275421515.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45993264857 + ... + 45993265976.

Almost surely, 2^{51512457266480} is an apocalyptic number.

It is an amenable number.

51512457266480 is an abundant number, since it is smaller than the sum of its proper divisors (85363500614512).

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

51512457266480 is a wasteful number, since it uses less digits than its factorization.

51512457266480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91986530853 (or 91986530847 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 51512457266480 in words is "fifty-one trillion, five hundred twelve billion, four hundred fifty-seven million, two hundred sixty-six thousand, four hundred eighty".