51973472739 has 12 divisors (see below), whose sum is σ = 69990916568. Its totient is φ = 34305902400.

The previous prime is 51973472713. The next prime is 51973472779. The reversal of 51973472739 is 93727437915.

It is not a de Polignac number, because 51973472739 - 2⁹ = 51973472227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51973472779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 818554 + ... + 879759.

Almost surely, 2^51973472739 is an apocalyptic number.

51973472739 is a deficient number, since it is larger than the sum of its proper divisors (18017443829).

51973472739 is a wasteful number, since it uses less digits than its factorization.

51973472739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698518 (or 1698417 counting only the distinct ones).

The product of its digits is 10001880, while the sum is 57.

The spelling of 51973472739 in words is "fifty-one billion, nine hundred seventy-three million, four hundred seventy-two thousand, seven hundred thirty-nine".