51651251135 has 32 divisors (see below), whose sum is σ = 67994035200. Its totient is φ = 37355045760.

The previous prime is 51651251129. The next prime is 51651251149. The reversal of 51651251135 is 53115215615.

It is not a de Polignac number, because 51651251135 - 2¹⁰ = 51651250111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51651251095 and 51651251104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13084232 + ... + 13088178.

It is an arithmetic number, because the mean of its divisors is an integer number (2124813600).

Almost surely, 2^51651251135 is an apocalyptic number.

51651251135 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51651251135 is a deficient number, since it is larger than the sum of its proper divisors (16342784065).

51651251135 is a wasteful number, since it uses less digits than its factorization.

51651251135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231.

The product of its digits is 22500, while the sum is 35.

The spelling of 51651251135 in words is "fifty-one billion, six hundred fifty-one million, two hundred fifty-one thousand, one hundred thirty-five".