51870722689 has 8 divisors (see below), whose sum is σ = 54298114560. Its totient is φ = 49490464800.

The previous prime is 51870722671. The next prime is 51870722707. The reversal of 51870722689 is 98622707815.

It is an interprime number because it is at equal distance from previous prime (51870722671) and next prime (51870722707).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51870722689 - 2³³ = 43280788097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51870722089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11781244 + ... + 11785645.

It is an arithmetic number, because the mean of its divisors is an integer number (6787264320).

Almost surely, 2^51870722689 is an apocalyptic number.

It is an amenable number.

51870722689 is a deficient number, since it is larger than the sum of its proper divisors (2427391871).

51870722689 is a wasteful number, since it uses less digits than its factorization.

51870722689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23566991.

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 51870722689 in words is "fifty-one billion, eight hundred seventy million, seven hundred twenty-two thousand, six hundred eighty-nine".