85573019421 has 12 divisors (see below), whose sum is σ = 123609520320. Its totient is φ = 57046811400.

The previous prime is 85573019401. The next prime is 85573019423. The reversal of 85573019421 is 12491037558.

85573019421 is a `hidden beast` number, since 8 + 557 + 3 + 0 + 1 + 94 + 2 + 1 = 666.

It is not a de Polignac number, because 85573019421 - 2¹¹ = 85573017373 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85573019423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170346 + ... + 447396.

It is an arithmetic number, because the mean of its divisors is an integer number (10300793360).

Almost surely, 2^85573019421 is an apocalyptic number.

It is an amenable number.

85573019421 is a deficient number, since it is larger than the sum of its proper divisors (38036500899).

85573019421 is a wasteful number, since it uses less digits than its factorization.

85573019421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311376 (or 311373 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 85573019421 in words is "eighty-five billion, five hundred seventy-three million, nineteen thousand, four hundred twenty-one".