51530215348 has 12 divisors (see below), whose sum is σ = 90179803840. Its totient is φ = 25764557112.

The previous prime is 51530215337. The next prime is 51530215417. The reversal of 51530215348 is 84351203515.

It is a super-2 number, since 2×51530215348² (a number of 22 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 3 ways as a sum of consecutive naturals, for example, 131365 + ... + 346867.

Almost surely, 2^51530215348 is an apocalyptic number.

It is an amenable number.

51530215348 is a deficient number, since it is larger than the sum of its proper divisors (38649588492).

51530215348 is a wasteful number, since it uses less digits than its factorization.

51530215348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275286 (or 275284 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 51530215348 in words is "fifty-one billion, five hundred thirty million, two hundred fifteen thousand, three hundred forty-eight".