51897930873 has 16 divisors (see below), whose sum is σ = 70397553600. Its totient is φ = 33998922560.

The previous prime is 51897930863. The next prime is 51897930881. The reversal of 51897930873 is 37803979815.

51897930873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51897930873 - 2⁴ = 51897930857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51897930853) 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, 407983 + ... + 519851.

It is an arithmetic number, because the mean of its divisors is an integer number (4399847100).

Almost surely, 2^51897930873 is an apocalyptic number.

It is an amenable number.

51897930873 is a deficient number, since it is larger than the sum of its proper divisors (18499622727).

51897930873 is a wasteful number, since it uses less digits than its factorization.

51897930873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114552.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 51897930873 in words is "fifty-one billion, eight hundred ninety-seven million, nine hundred thirty thousand, eight hundred seventy-three".