251313377755 has 16 divisors (see below), whose sum is σ = 331170824448. Its totient is φ = 181562940000.

The previous prime is 251313377741. The next prime is 251313377797. The reversal of 251313377755 is 557773313152.

It is not a de Polignac number, because 251313377755 - 2¹³ = 251313369563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 251313377699 and 251313377708.

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, 15121941 + ... + 15138550.

It is an arithmetic number, because the mean of its divisors is an integer number (20698176528).

Almost surely, 2^251313377755 is an apocalyptic number.

251313377755 is a deficient number, since it is larger than the sum of its proper divisors (79857446693).

251313377755 is a wasteful number, since it uses less digits than its factorization.

251313377755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30260658.

The product of its digits is 2315250, while the sum is 49.

The spelling of 251313377755 in words is "two hundred fifty-one billion, three hundred thirteen million, three hundred seventy-seven thousand, seven hundred fifty-five".