185797012421 has 4 divisors (see below), whose sum is σ = 185814787200. Its totient is φ = 185779237644.

The previous prime is 185797012351. The next prime is 185797012483. The reversal of 185797012421 is 124210797581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 185797012421 - 2¹⁰ = 185797011397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185797012021) 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, 8871701 + ... + 8892618.

It is an arithmetic number, because the mean of its divisors is an integer number (46453696800).

Almost surely, 2^185797012421 is an apocalyptic number.

It is an amenable number.

185797012421 is a deficient number, since it is larger than the sum of its proper divisors (17774779).

185797012421 is a wasteful number, since it uses less digits than its factorization.

185797012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17774778.

The product of its (nonzero) digits is 282240, while the sum is 47.

The spelling of 185797012421 in words is "one hundred eighty-five billion, seven hundred ninety-seven million, twelve thousand, four hundred twenty-one".