51966742677 has 16 divisors (see below), whose sum is σ = 69744360000. Its totient is φ = 34416899712.

The previous prime is 51966742669. The next prime is 51966742679. The reversal of 51966742677 is 77624766915.

It is not a de Polignac number, because 51966742677 - 2³ = 51966742669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51966742677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51966742679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3524673 + ... + 3539385.

It is an arithmetic number, because the mean of its divisors is an integer number (4359022500).

Almost surely, 2^51966742677 is an apocalyptic number.

It is an amenable number.

51966742677 is a deficient number, since it is larger than the sum of its proper divisors (17777617323).

51966742677 is a wasteful number, since it uses less digits than its factorization.

51966742677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22372.

The product of its digits is 26671680, while the sum is 60.

The spelling of 51966742677 in words is "fifty-one billion, nine hundred sixty-six million, seven hundred forty-two thousand, six hundred seventy-seven".