51023131255 has 16 divisors (see below), whose sum is σ = 62220563424. Its totient is φ = 40161909760.

The previous prime is 51023131223. The next prime is 51023131261. The reversal of 51023131255 is 55213132015.

It is not a de Polignac number, because 51023131255 - 2⁵ = 51023131223 is a prime.

It is a Duffinian number.

It is a congruent 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, 252181 + ... + 406990.

It is an arithmetic number, because the mean of its divisors is an integer number (3888785214).

Almost surely, 2^51023131255 is an apocalyptic number.

51023131255 is a deficient number, since it is larger than the sum of its proper divisors (11197432169).

51023131255 is a wasteful number, since it uses less digits than its factorization.

51023131255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659426.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 51023131255 in words is "fifty-one billion, twenty-three million, one hundred thirty-one thousand, two hundred fifty-five".