51056070621 has 8 divisors (see below), whose sum is σ = 68087900640. Its totient is φ = 34030810512.

The previous prime is 51056070617. The next prime is 51056070629. The reversal of 51056070621 is 12607065015.

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

It is not a de Polignac number, because 51056070621 - 2² = 51056070617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51056070629) 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, 1624315 + ... + 1655448.

It is an arithmetic number, because the mean of its divisors is an integer number (8510987580).

Almost surely, 2^51056070621 is an apocalyptic number.

It is an amenable number.

51056070621 is a deficient number, since it is larger than the sum of its proper divisors (17031830019).

51056070621 is a wasteful number, since it uses less digits than its factorization.

51056070621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284955.

The product of its (nonzero) digits is 12600, while the sum is 33.

The spelling of 51056070621 in words is "fifty-one billion, fifty-six million, seventy thousand, six hundred twenty-one".