51973666761 has 8 divisors (see below), whose sum is σ = 69300256960. Its totient is φ = 34648093872.

The previous prime is 51973666751. The next prime is 51973666763. The reversal of 51973666761 is 16766637915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51973666761 - 2¹⁵ = 51973633993 is a prime.

It is a super-2 number, since 2×51973666761² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51973666763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125845 + ... + 346098.

It is an arithmetic number, because the mean of its divisors is an integer number (8662532120).

Almost surely, 2^51973666761 is an apocalyptic number.

It is an amenable number.

51973666761 is a deficient number, since it is larger than the sum of its proper divisors (17326590199).

51973666761 is a wasteful number, since it uses less digits than its factorization.

51973666761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508655.

The product of its digits is 8573040, while the sum is 57.

The spelling of 51973666761 in words is "fifty-one billion, nine hundred seventy-three million, six hundred sixty-six thousand, seven hundred sixty-one".