51106566022051 has 4 divisors (see below), whose sum is σ = 51280991162352. Its totient is φ = 50932140881752.

The previous prime is 51106566021997. The next prime is 51106566022087. The reversal of 51106566022051 is 15022066560115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51106566022051 - 2²⁵ = 51106532467619 is a prime.

It is a super-2 number, since 2×51106566022051² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51106566021995 and 51106566022013.

It is not an unprimeable number, because it can be changed into a prime (51106566022091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87212569711 + ... + 87212570296.

It is an arithmetic number, because the mean of its divisors is an integer number (12820247790588).

Almost surely, 2^{51106566022051} is an apocalyptic number.

51106566022051 is a deficient number, since it is larger than the sum of its proper divisors (174425140301).

51106566022051 is a wasteful number, since it uses less digits than its factorization.

51106566022051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174425140300.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 51106566022051 in words is "fifty-one trillion, one hundred six billion, five hundred sixty-six million, twenty-two thousand, fifty-one".