51515115655102 has 16 divisors (see below), whose sum is σ = 84633308452224. Its totient is φ = 23322670975000.

The previous prime is 51515115655097. The next prime is 51515115655111. The reversal of 51515115655102 is 20155651151515.

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, 4664528674 + ... + 4664539717.

It is an arithmetic number, because the mean of its divisors is an integer number (5289581778264).

Almost surely, 2^{51515115655102} is an apocalyptic number.

51515115655102 is a deficient number, since it is larger than the sum of its proper divisors (33118192797122).

51515115655102 is a wasteful number, since it uses less digits than its factorization.

51515115655102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329068655.

The product of its (nonzero) digits is 187500, while the sum is 43.

The spelling of 51515115655102 in words is "fifty-one trillion, five hundred fifteen billion, one hundred fifteen million, six hundred fifty-five thousand, one hundred two".