51028621016637 has 16 divisors (see below), whose sum is σ = 75162986081280. Its totient is φ = 30534963092400.

The previous prime is 51028621016623. The next prime is 51028621016657. The reversal of 51028621016637 is 73661012682015.

It is not a de Polignac number, because 51028621016637 - 2¹⁸ = 51028620754493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51028621016617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9786844539 + ... + 9786849752.

It is an arithmetic number, because the mean of its divisors is an integer number (4697686630080).

Almost surely, 2^{51028621016637} is an apocalyptic number.

It is an amenable number.

51028621016637 is a deficient number, since it is larger than the sum of its proper divisors (24134365064643).

51028621016637 is a wasteful number, since it uses less digits than its factorization.

51028621016637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573694384.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 51028621016637 in words is "fifty-one trillion, twenty-eight billion, six hundred twenty-one million, sixteen thousand, six hundred thirty-seven".