51105111115 has 8 divisors (see below), whose sum is σ = 61329007728. Its totient is φ = 40882172640.

The previous prime is 51105111049. The next prime is 51105111121. The reversal of 51105111115 is 51111150115.

It is a happy number.

51105111115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51105111115 - 2⁹ = 51105110603 is a prime.

It is a super-2 number, since 2×51105111115² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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, 116437 + ... + 340246.

It is an arithmetic number, because the mean of its divisors is an integer number (7666125966).

Almost surely, 2^51105111115 is an apocalyptic number.

51105111115 is a deficient number, since it is larger than the sum of its proper divisors (10223896613).

51105111115 is a wasteful number, since it uses less digits than its factorization.

51105111115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479069.

The product of its (nonzero) digits is 125, while the sum is 22.

The spelling of 51105111115 in words is "fifty-one billion, one hundred five million, one hundred eleven thousand, one hundred fifteen".