51550315215 has 32 divisors (see below), whose sum is σ = 99224670720. Its totient is φ = 22325549184.

The previous prime is 51550315181. The next prime is 51550315321. The reversal of 51550315215 is 51251305515.

It is not a de Polignac number, because 51550315215 - 2⁷ = 51550315087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12917884 + ... + 12921873.

It is an arithmetic number, because the mean of its divisors is an integer number (3100770960).

Almost surely, 2^51550315215 is an apocalyptic number.

51550315215 is a deficient number, since it is larger than the sum of its proper divisors (47674355505).

51550315215 is a wasteful number, since it uses less digits than its factorization.

51550315215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25839791.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 51550315215 in words is "fifty-one billion, five hundred fifty million, three hundred fifteen thousand, two hundred fifteen".