51301979923 has 16 divisors (see below), whose sum is σ = 52802870400. Its totient is φ = 49813427520.

The previous prime is 51301979903. The next prime is 51301980013. The reversal of 51301979923 is 32997910315.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51301979923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51301979903) 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, 11821288 + ... + 11825626.

It is an arithmetic number, because the mean of its divisors is an integer number (3300179400).

Almost surely, 2^51301979923 is an apocalyptic number.

51301979923 is a deficient number, since it is larger than the sum of its proper divisors (1500890477).

51301979923 is a wasteful number, since it uses less digits than its factorization.

51301979923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682.

The product of its (nonzero) digits is 459270, while the sum is 49.

The spelling of 51301979923 in words is "fifty-one billion, three hundred one million, nine hundred seventy-nine thousand, nine hundred twenty-three".