51557835585 has 16 divisors (see below), whose sum is σ = 84504551040. Its totient is φ = 26826840960.

The previous prime is 51557835551. The next prime is 51557835607. The reversal of 51557835585 is 58553875515.

It is not a de Polignac number, because 51557835585 - 2¹⁵ = 51557802817 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41916325 + ... + 41917554.

It is an arithmetic number, because the mean of its divisors is an integer number (5281534440).

Almost surely, 2^51557835585 is an apocalyptic number.

It is an amenable number.

51557835585 is a deficient number, since it is larger than the sum of its proper divisors (32946715455).

51557835585 is a wasteful number, since it uses less digits than its factorization.

51557835585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83833928.

The product of its digits is 21000000, while the sum is 57.

The spelling of 51557835585 in words is "fifty-one billion, five hundred fifty-seven million, eight hundred thirty-five thousand, five hundred eighty-five".