152189394821 has 4 divisors (see below), whose sum is σ = 152190215232. Its totient is φ = 152188574412.

The previous prime is 152189394811. The next prime is 152189394823. The reversal of 152189394821 is 128493981251.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 152189394821 - 2¹⁸ = 152189132677 is a prime.

It is a super-2 number, since 2×152189394821² (a number of 23 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 (152189394823) 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, 14900 + ... + 551906.

It is an arithmetic number, because the mean of its divisors is an integer number (38047553808).

Almost surely, 2^152189394821 is an apocalyptic number.

It is an amenable number.

152189394821 is a deficient number, since it is larger than the sum of its proper divisors (820411).

152189394821 is an equidigital number, since it uses as much as digits as its factorization.

152189394821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820410.

The product of its digits is 1244160, while the sum is 53.

The spelling of 152189394821 in words is "one hundred fifty-two billion, one hundred eighty-nine million, three hundred ninety-four thousand, eight hundred twenty-one".