51915472923 has 4 divisors (see below), whose sum is σ = 69220630568. Its totient is φ = 34610315280.

The previous prime is 51915472901. The next prime is 51915472937. The reversal of 51915472923 is 32927451915.

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

It is not a de Polignac number, because 51915472923 - 2¹⁰ = 51915471899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51915472963) 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, 8652578818 + ... + 8652578823.

It is an arithmetic number, because the mean of its divisors is an integer number (17305157642).

Almost surely, 2^51915472923 is an apocalyptic number.

51915472923 is a deficient number, since it is larger than the sum of its proper divisors (17305157645).

51915472923 is a wasteful number, since it uses less digits than its factorization.

51915472923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17305157644.

The product of its digits is 680400, while the sum is 48.

The spelling of 51915472923 in words is "fifty-one billion, nine hundred fifteen million, four hundred seventy-two thousand, nine hundred twenty-three".