185137013212 has 12 divisors (see below), whose sum is σ = 325417042440. Its totient is φ = 92160715376.

The previous prime is 185137013209. The next prime is 185137013249. The reversal of 185137013212 is 212310731581.

It is a super-2 number, since 2×185137013212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101946787 + ... + 101948602.

It is an arithmetic number, because the mean of its divisors is an integer number (27118086870).

Almost surely, 2^185137013212 is an apocalyptic number.

It is an amenable number.

185137013212 is a deficient number, since it is larger than the sum of its proper divisors (140280029228).

185137013212 is a wasteful number, since it uses less digits than its factorization.

185137013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203895620 (or 203895618 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

Adding to 185137013212 its reverse (212310731581), we get a palindrome (397447744793).

The spelling of 185137013212 in words is "one hundred eighty-five billion, one hundred thirty-seven million, thirteen thousand, two hundred twelve".