51627078421 has 8 divisors (see below), whose sum is σ = 51823692000. Its totient is φ = 51430838448.

The previous prime is 51627078397. The next prime is 51627078427. The reversal of 51627078421 is 12487072615.

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

It is a cyclic number.

It is not a de Polignac number, because 51627078421 - 2³³ = 43037143829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51627078427) 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, 185070 + ... + 370816.

It is an arithmetic number, because the mean of its divisors is an integer number (6477961500).

Almost surely, 2^51627078421 is an apocalyptic number.

It is an amenable number.

51627078421 is a deficient number, since it is larger than the sum of its proper divisors (196613579).

51627078421 is a wasteful number, since it uses less digits than its factorization.

51627078421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186803.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 51627078421 in words is "fifty-one billion, six hundred twenty-seven million, seventy-eight thousand, four hundred twenty-one".