51533260215 has 16 divisors (see below), whose sum is σ = 84207541248. Its totient is φ = 26899630496.

The previous prime is 51533260189. The next prime is 51533260291. The reversal of 51533260215 is 51206233515.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51533260215 - 2⁹ = 51533259703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36547707 + ... + 36549116.

It is an arithmetic number, because the mean of its divisors is an integer number (5262971328).

Almost surely, 2^51533260215 is an apocalyptic number.

51533260215 is a deficient number, since it is larger than the sum of its proper divisors (32674281033).

51533260215 is a wasteful number, since it uses less digits than its factorization.

51533260215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73096878.

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 51533260215 in words is "fifty-one billion, five hundred thirty-three million, two hundred sixty thousand, two hundred fifteen".