51992488211 has 4 divisors (see below), whose sum is σ = 52507265424. Its totient is φ = 51477711000.

The previous prime is 51992488159. The next prime is 51992488313. The reversal of 51992488211 is 11288429915.

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 51992488211 - 2³⁴ = 34812619027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51992488211.

It is not an unprimeable number, because it can be changed into a prime (51992488511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257388455 + ... + 257388656.

It is an arithmetic number, because the mean of its divisors is an integer number (13126816356).

Almost surely, 2^51992488211 is an apocalyptic number.

51992488211 is a deficient number, since it is larger than the sum of its proper divisors (514777213).

51992488211 is a wasteful number, since it uses less digits than its factorization.

51992488211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514777212.

The product of its digits is 414720, while the sum is 50.

The spelling of 51992488211 in words is "fifty-one billion, nine hundred ninety-two million, four hundred eighty-eight thousand, two hundred eleven".