51492210648 has 32 divisors (see below), whose sum is σ = 129550475760. Its totient is φ = 17054743680.

The previous prime is 51492210587. The next prime is 51492210709. The reversal of 51492210648 is 84601229415.

It is an interprime number because it is at equal distance from previous prime (51492210587) and next prime (51492210709).

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, 6829063 + ... + 6836598.

Almost surely, 2^51492210648 is an apocalyptic number.

It is an amenable number.

51492210648 is an abundant number, since it is smaller than the sum of its proper divisors (78058265112).

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

51492210648 is a wasteful number, since it uses less digits than its factorization.

51492210648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13665827 (or 13665823 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 51492210648 in words is "fifty-one billion, four hundred ninety-two million, two hundred ten thousand, six hundred forty-eight".