51021755115 has 32 divisors (see below), whose sum is σ = 82996122432. Its totient is φ = 26758080000.

The previous prime is 51021755093. The next prime is 51021755159. The reversal of 51021755115 is 51155712015.

51021755115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51021755115 - 2¹⁴ = 51021738731 is a prime.

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, 5211525 + ... + 5221305.

It is an arithmetic number, because the mean of its divisors is an integer number (2593628826).

Almost surely, 2^51021755115 is an apocalyptic number.

51021755115 is a deficient number, since it is larger than the sum of its proper divisors (31974367317).

51021755115 is a wasteful number, since it uses less digits than its factorization.

51021755115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15551.

The product of its (nonzero) digits is 8750, while the sum is 33.

The spelling of 51021755115 in words is "fifty-one billion, twenty-one million, seven hundred fifty-five thousand, one hundred fifteen".