51106213772769 has 8 divisors (see below), whose sum is σ = 68141786099680. Its totient is φ = 34070725313856.

The previous prime is 51106213772737. The next prime is 51106213772771. The reversal of 51106213772769 is 96727731260115.

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

It is not a de Polignac number, because 51106213772769 - 2⁵ = 51106213772737 is a prime.

It is a super-2 number, since 2×51106213772769² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51106213772729) 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, 19531099 + ... + 21992640.

It is an arithmetic number, because the mean of its divisors is an integer number (8517723262460).

Almost surely, 2^{51106213772769} is an apocalyptic number.

It is an amenable number.

51106213772769 is a deficient number, since it is larger than the sum of its proper divisors (17035572326911).

51106213772769 is a wasteful number, since it uses less digits than its factorization.

51106213772769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41933999.

The product of its (nonzero) digits is 6667920, while the sum is 57.

The spelling of 51106213772769 in words is "fifty-one trillion, one hundred six billion, two hundred thirteen million, seven hundred seventy-two thousand, seven hundred sixty-nine".