51445232115 has 32 divisors (see below), whose sum is σ = 82796138496. Its totient is φ = 27276387840.

The previous prime is 51445232089. The next prime is 51445232117. The reversal of 51445232115 is 51123254415.

It is not a de Polignac number, because 51445232115 - 2¹⁹ = 51444707827 is a prime.

It is a super-2 number, since 2×51445232115² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51445232117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5361352 + ... + 5370938.

It is an arithmetic number, because the mean of its divisors is an integer number (2587379328).

Almost surely, 2^51445232115 is an apocalyptic number.

51445232115 is a deficient number, since it is larger than the sum of its proper divisors (31350906381).

51445232115 is a wasteful number, since it uses less digits than its factorization.

51445232115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11659.

The product of its digits is 24000, while the sum is 33.

The spelling of 51445232115 in words is "fifty-one billion, four hundred forty-five million, two hundred thirty-two thousand, one hundred fifteen".