51665152111 has 8 divisors (see below), whose sum is σ = 51734534544. Its totient is φ = 51595801920.

The previous prime is 51665152069. The next prime is 51665152139. The reversal of 51665152111 is 11125156615.

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

It is a cyclic number.

It is not a de Polignac number, because 51665152111 - 2²⁷ = 51530934383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51668152111) 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, 5627721 + ... + 5636893.

It is an arithmetic number, because the mean of its divisors is an integer number (6466816818).

Almost surely, 2^51665152111 is an apocalyptic number.

51665152111 is a deficient number, since it is larger than the sum of its proper divisors (69382433).

51665152111 is an equidigital number, since it uses as much as digits as its factorization.

51665152111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16121.

The product of its digits is 9000, while the sum is 34.

The spelling of 51665152111 in words is "fifty-one billion, six hundred sixty-five million, one hundred fifty-two thousand, one hundred eleven".