51102020115 has 24 divisors (see below), whose sum is σ = 88906137840. Its totient is φ = 27153086784.

The previous prime is 51102020113. The next prime is 51102020119.

51102020115 is a `hidden beast` number, since 511 + 0 + 20 + 20 + 115 = 666.

51102020115 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51102020115 - 2¹ = 51102020113 is a prime.

It is a super-2 number, since 2×51102020115² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51102020113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2098677 + ... + 2122886.

It is an arithmetic number, because the mean of its divisors is an integer number (3704422410).

Almost surely, 2^51102020115 is an apocalyptic number.

51102020115 is a deficient number, since it is larger than the sum of its proper divisors (37804117725).

51102020115 is a wasteful number, since it uses less digits than its factorization.

51102020115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221843 (or 4221840 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

It can be divided in two parts, 511020 and 20115, that added together give a palindrome (531135).

The spelling of 51102020115 in words is "fifty-one billion, one hundred two million, twenty thousand, one hundred fifteen".