51372973383 has 4 divisors (see below), whose sum is σ = 68497297848. Its totient is φ = 34248648920.

The previous prime is 51372973369. The next prime is 51372973409. The reversal of 51372973383 is 38337927315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51372973383 - 2¹⁸ = 51372711239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51372973363) 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, 8562162228 + ... + 8562162233.

It is an arithmetic number, because the mean of its divisors is an integer number (17124324462).

Almost surely, 2^51372973383 is an apocalyptic number.

51372973383 is a deficient number, since it is larger than the sum of its proper divisors (17124324465).

51372973383 is a wasteful number, since it uses less digits than its factorization.

51372973383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17124324464.

The product of its digits is 2857680, while the sum is 51.

The spelling of 51372973383 in words is "fifty-one billion, three hundred seventy-two million, nine hundred seventy-three thousand, three hundred eighty-three".