51116572671 has 8 divisors (see below), whose sum is σ = 68230577664. Its totient is φ = 34040141400.

The previous prime is 51116572649. The next prime is 51116572681. The reversal of 51116572671 is 17627561115.

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

It is not a de Polignac number, because 51116572671 - 2⁹ = 51116572159 is a prime.

It is a super-2 number, since 2×51116572671² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51116572681) 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, 9390255 + ... + 9395696.

It is an arithmetic number, because the mean of its divisors is an integer number (8528822208).

Almost surely, 2^51116572671 is an apocalyptic number.

51116572671 is a deficient number, since it is larger than the sum of its proper divisors (17114004993).

51116572671 is a wasteful number, since it uses less digits than its factorization.

51116572671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18786861.

The product of its digits is 88200, while the sum is 42.

The spelling of 51116572671 in words is "fifty-one billion, one hundred sixteen million, five hundred seventy-two thousand, six hundred seventy-one".