51137543685 has 32 divisors (see below), whose sum is σ = 86731731072. Its totient is φ = 25639792640.

The previous prime is 51137543671. The next prime is 51137543689. The reversal of 51137543685 is 58634573115.

It is not a de Polignac number, because 51137543685 - 2⁴ = 51137543669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51137543689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110842 + ... + 338468.

It is an arithmetic number, because the mean of its divisors is an integer number (2710366596).

Almost surely, 2^51137543685 is an apocalyptic number.

It is an amenable number.

51137543685 is a deficient number, since it is larger than the sum of its proper divisors (35594187387).

51137543685 is a wasteful number, since it uses less digits than its factorization.

51137543685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228533.

The product of its digits is 1512000, while the sum is 48.

The spelling of 51137543685 in words is "fifty-one billion, one hundred thirty-seven million, five hundred forty-three thousand, six hundred eighty-five".