51814735511 has 16 divisors (see below), whose sum is σ = 66684069888. Its totient is φ = 39072693600.

The previous prime is 51814735499. The next prime is 51814735513. The reversal of 51814735511 is 11553741815.

It is a cyclic number.

It is not a de Polignac number, because 51814735511 - 2²² = 51810541207 is a prime.

It is a super-2 number, since 2×51814735511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51814735513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10851140 + ... + 10855913.

It is an arithmetic number, because the mean of its divisors is an integer number (4167754368).

Almost surely, 2^51814735511 is an apocalyptic number.

51814735511 is a deficient number, since it is larger than the sum of its proper divisors (14869334377).

51814735511 is a wasteful number, since it uses less digits than its factorization.

51814735511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21707102.

The product of its digits is 84000, while the sum is 41.

The spelling of 51814735511 in words is "fifty-one billion, eight hundred fourteen million, seven hundred thirty-five thousand, five hundred eleven".