51897523843 has 8 divisors (see below), whose sum is σ = 57199146480. Its totient is φ = 46693178880.

The previous prime is 51897523813. The next prime is 51897523877. The reversal of 51897523843 is 34832579815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51897523843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51897523813) 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 7 ways as a sum of consecutive naturals, for example, 24318298 + ... + 24320431.

It is an arithmetic number, because the mean of its divisors is an integer number (7149893310).

Almost surely, 2^51897523843 is an apocalyptic number.

51897523843 is a deficient number, since it is larger than the sum of its proper divisors (5301622637).

51897523843 is a wasteful number, since it uses less digits than its factorization.

51897523843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48638837.

The product of its digits is 7257600, while the sum is 55.

The spelling of 51897523843 in words is "fifty-one billion, eight hundred ninety-seven million, five hundred twenty-three thousand, eight hundred forty-three".