51151215705 has 32 divisors (see below), whose sum is σ = 83194801920. Its totient is φ = 26831784960.

The previous prime is 51151215701. The next prime is 51151215719. The reversal of 51151215705 is 50751215115.

It is not a de Polignac number, because 51151215705 - 2² = 51151215701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51151215701) 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, 328045 + ... + 458165.

It is an arithmetic number, because the mean of its divisors is an integer number (2599837560).

Almost surely, 2^51151215705 is an apocalyptic number.

It is an amenable number.

51151215705 is a deficient number, since it is larger than the sum of its proper divisors (32043586215).

51151215705 is a wasteful number, since it uses less digits than its factorization.

51151215705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130561.

The product of its (nonzero) digits is 8750, while the sum is 33.

The spelling of 51151215705 in words is "fifty-one billion, one hundred fifty-one million, two hundred fifteen thousand, seven hundred five".