51112021115 has 16 divisors (see below), whose sum is σ = 62012545056. Its totient is φ = 40438464000.

The previous prime is 51112021099. The next prime is 51112021159.

51112021115 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51112021115 - 2⁴ = 51112021099 is a prime.

It is a super-2 number, since 2×51112021115² (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 15 ways as a sum of consecutive naturals, for example, 387464 + ... + 502346.

It is an arithmetic number, because the mean of its divisors is an integer number (3875784066).

Almost surely, 2^51112021115 is an apocalyptic number.

51112021115 is a deficient number, since it is larger than the sum of its proper divisors (10900523941).

51112021115 is a wasteful number, since it uses less digits than its factorization.

51112021115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115870.

The product of its (nonzero) digits is 100, while the sum is 20.

It can be divided in two parts, 511120 and 21115, that added together give a palindrome (532235).

The spelling of 51112021115 in words is "fifty-one billion, one hundred twelve million, twenty-one thousand, one hundred fifteen".