51245557670408 has 128 divisors (see below), whose sum is σ = 105662962944000. Its totient is φ = 23216570208000.

The previous prime is 51245557670381. The next prime is 51245557670441. The reversal of 51245557670408 is 80407675554215.

It is a super-2 number, since 2×51245557670408² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94767023 + ... + 95306241.

It is an arithmetic number, because the mean of its divisors is an integer number (825491898000).

Almost surely, 2^{51245557670408} is an apocalyptic number.

It is an amenable number.

51245557670408 is an abundant number, since it is smaller than the sum of its proper divisors (54417405273592).

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

51245557670408 is a wasteful number, since it uses less digits than its factorization.

51245557670408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539595 (or 539591 counting only the distinct ones).

The product of its (nonzero) digits is 47040000, while the sum is 59.

The spelling of 51245557670408 in words is "fifty-one trillion, two hundred forty-five billion, five hundred fifty-seven million, six hundred seventy thousand, four hundred eight".