51156771297 has 16 divisors (see below), whose sum is σ = 73210662720. Its totient is φ = 31658660352.

The previous prime is 51156771271. The next prime is 51156771307. The reversal of 51156771297 is 79217765115.

It is not a de Polignac number, because 51156771297 - 2⁸ = 51156771041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (51156771257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6866647 + ... + 6874092.

It is an arithmetic number, because the mean of its divisors is an integer number (4575666420).

Almost surely, 2^51156771297 is an apocalyptic number.

It is an amenable number.

51156771297 is a deficient number, since it is larger than the sum of its proper divisors (22053891423).

51156771297 is a wasteful number, since it uses less digits than its factorization.

51156771297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13740832.

The product of its digits is 926100, while the sum is 51.

The spelling of 51156771297 in words is "fifty-one billion, one hundred fifty-six million, seven hundred seventy-one thousand, two hundred ninety-seven".