85189580621 has 4 divisors (see below), whose sum is σ = 86016664032. Its totient is φ = 84362497212.

The previous prime is 85189580579. The next prime is 85189580627. The reversal of 85189580621 is 12608598158.

It is a happy number.

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 85189580621 - 2⁶ = 85189580557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85189580627) 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, 413541551 + ... + 413541756.

It is an arithmetic number, because the mean of its divisors is an integer number (21504166008).

Almost surely, 2^85189580621 is an apocalyptic number.

It is an amenable number.

85189580621 is a deficient number, since it is larger than the sum of its proper divisors (827083411).

85189580621 is a wasteful number, since it uses less digits than its factorization.

85189580621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827083410.

The product of its (nonzero) digits is 1382400, while the sum is 53.

The spelling of 85189580621 in words is "eighty-five billion, one hundred eighty-nine million, five hundred eighty thousand, six hundred twenty-one".