51950998388011 has 4 divisors (see below), whose sum is σ = 51951015663624. Its totient is φ = 51950981112400.

The previous prime is 51950998387961. The next prime is 51950998388017. The reversal of 51950998388011 is 11088389905915.

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 51950998388011 - 2³⁵ = 51916638649643 is a prime.

It is a super-2 number, since 2×51950998388011² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51950998388017) 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, 2821585 + ... + 10576546.

It is an arithmetic number, because the mean of its divisors is an integer number (12987753915906).

Almost surely, 2^{51950998388011} is an apocalyptic number.

51950998388011 is a deficient number, since it is larger than the sum of its proper divisors (17275613).

51950998388011 is a wasteful number, since it uses less digits than its factorization.

51950998388011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17275612.

The product of its (nonzero) digits is 27993600, while the sum is 67.

The spelling of 51950998388011 in words is "fifty-one trillion, nine hundred fifty billion, nine hundred ninety-eight million, three hundred eighty-eight thousand, eleven".