21162404485 has 16 divisors (see below), whose sum is σ = 25759244160. Its totient is φ = 16687142080.

The previous prime is 21162404477. The next prime is 21162404519. The reversal of 21162404485 is 58440426112.

It is not a de Polignac number, because 21162404485 - 2³ = 21162404477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2570706 + ... + 2578924.

It is an arithmetic number, because the mean of its divisors is an integer number (1609952760).

Almost surely, 2^21162404485 is an apocalyptic number.

It is an amenable number.

21162404485 is a deficient number, since it is larger than the sum of its proper divisors (4596839675).

21162404485 is an equidigital number, since it uses as much as digits as its factorization.

21162404485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15548.

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 21162404485 in words is "twenty-one billion, one hundred sixty-two million, four hundred four thousand, four hundred eighty-five".