51885546641 has 16 divisors (see below), whose sum is σ = 53750000640. Its totient is φ = 50033341440.

The previous prime is 51885546607. The next prime is 51885546653. The reversal of 51885546641 is 14664558815.

It is a cyclic number.

It is not a de Polignac number, because 51885546641 - 2¹⁸ = 51885284497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51885546241) 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, 12564065 + ... + 12568193.

It is an arithmetic number, because the mean of its divisors is an integer number (3359375040).

Almost surely, 2^51885546641 is an apocalyptic number.

It is an amenable number.

51885546641 is a deficient number, since it is larger than the sum of its proper divisors (1864453999).

51885546641 is a wasteful number, since it uses less digits than its factorization.

51885546641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504.

The product of its digits is 4608000, while the sum is 53.

The spelling of 51885546641 in words is "fifty-one billion, eight hundred eighty-five million, five hundred forty-six thousand, six hundred forty-one".