51867745885 has 16 divisors (see below), whose sum is σ = 62406720000. Its totient is φ = 41383996416.

The previous prime is 51867745871. The next prime is 51867745931. The reversal of 51867745885 is 58854776815.

It is a cyclic number.

It is not a de Polignac number, because 51867745885 - 2⁷ = 51867745757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8364016 + ... + 8370214.

It is an arithmetic number, because the mean of its divisors is an integer number (3900420000).

Almost surely, 2^51867745885 is an apocalyptic number.

It is an amenable number.

51867745885 is a deficient number, since it is larger than the sum of its proper divisors (10538974115).

51867745885 is a wasteful number, since it uses less digits than its factorization.

51867745885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10380.

The product of its digits is 75264000, while the sum is 64.

The spelling of 51867745885 in words is "fifty-one billion, eight hundred sixty-seven million, seven hundred forty-five thousand, eight hundred eighty-five".