51245018448 has 40 divisors (see below), whose sum is σ = 142566271008. Its totient is φ = 15767697792.

The previous prime is 51245018437. The next prime is 51245018543. The reversal of 51245018448 is 84481054215.

It is a congruent number.

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, 41061090 + ... + 41062337.

Almost surely, 2^51245018448 is an apocalyptic number.

It is an amenable number.

51245018448 is an abundant number, since it is smaller than the sum of its proper divisors (91321252560).

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

51245018448 is a wasteful number, since it uses less digits than its factorization.

51245018448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82123451 (or 82123445 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 42.

The spelling of 51245018448 in words is "fifty-one billion, two hundred forty-five million, eighteen thousand, four hundred forty-eight".