51923374197 has 4 divisors (see below), whose sum is σ = 69231165600. Its totient is φ = 34615582796.

The previous prime is 51923374183. The next prime is 51923374199. The reversal of 51923374197 is 79147332915.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51923374197 - 2⁸ = 51923373941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51923374199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8653895697 + ... + 8653895702.

It is an arithmetic number, because the mean of its divisors is an integer number (17307791400).

Almost surely, 2^51923374197 is an apocalyptic number.

It is an amenable number.

51923374197 is a deficient number, since it is larger than the sum of its proper divisors (17307791403).

51923374197 is a wasteful number, since it uses less digits than its factorization.

51923374197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17307791402.

The product of its digits is 1428840, while the sum is 51.

The spelling of 51923374197 in words is "fifty-one billion, nine hundred twenty-three million, three hundred seventy-four thousand, one hundred ninety-seven".