185134712811 has 8 divisors (see below), whose sum is σ = 246920670720. Its totient is φ = 123385948392.

The previous prime is 185134712809. The next prime is 185134712863. The reversal of 185134712811 is 118217431581.

It is a happy number.

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

It is not a de Polignac number, because 185134712811 - 2¹ = 185134712809 is a prime.

It is a super-2 number, since 2×185134712811² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (185134712311) 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, 9286755 + ... + 9306668.

It is an arithmetic number, because the mean of its divisors is an integer number (30865083840).

Almost surely, 2^185134712811 is an apocalyptic number.

185134712811 is a deficient number, since it is larger than the sum of its proper divisors (61785957909).

185134712811 is a wasteful number, since it uses less digits than its factorization.

185134712811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18596745.

The product of its digits is 53760, while the sum is 42.

The spelling of 185134712811 in words is "one hundred eighty-five billion, one hundred thirty-four million, seven hundred twelve thousand, eight hundred eleven".