51651066115 has 12 divisors (see below), whose sum is σ = 68128183872. Its totient is φ = 37564411280.

The previous prime is 51651066079. The next prime is 51651066133. The reversal of 51651066115 is 51166015615.

It is not a de Polignac number, because 51651066115 - 2⁷ = 51651065987 is a prime.

It is a super-2 number, since 2×51651066115² (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 11 ways as a sum of consecutive naturals, for example, 42686227 + ... + 42687436.

It is an arithmetic number, because the mean of its divisors is an integer number (5677348656).

Almost surely, 2^51651066115 is an apocalyptic number.

51651066115 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51651066115 is a deficient number, since it is larger than the sum of its proper divisors (16477117757).

51651066115 is a wasteful number, since it uses less digits than its factorization.

51651066115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85373690 (or 85373679 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 51651066115 in words is "fifty-one billion, six hundred fifty-one million, sixty-six thousand, one hundred fifteen".