51245557670424 has 48 divisors (see below), whose sum is σ = 138726879503400. Its totient is φ = 15767863897344.

The previous prime is 51245557670381. The next prime is 51245557670441. The reversal of 51245557670424 is 42407675554215.

It is a happy number.

It is a super-2 number, since 2×51245557670424² (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 11 ways as a sum of consecutive naturals, for example, 6317249109 + ... + 6317257220.

Almost surely, 2^{51245557670424} is an apocalyptic number.

It is an amenable number.

51245557670424 is an abundant number, since it is smaller than the sum of its proper divisors (87481321832976).

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

51245557670424 is a wasteful number, since it uses less digits than its factorization.

51245557670424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12634506364 (or 12634506347 counting only the distinct ones).

The product of its (nonzero) digits is 47040000, while the sum is 57.

The spelling of 51245557670424 in words is "fifty-one trillion, two hundred forty-five billion, five hundred fifty-seven million, six hundred seventy thousand, four hundred twenty-four".