21423637225319 has 24 divisors (see below), whose sum is σ = 25004953116000. Its totient is φ = 18301549250880.

The previous prime is 21423637225313. The next prime is 21423637225321. The reversal of 21423637225319 is 91352273632412.

It is not a de Polignac number, because 21423637225319 - 2⁴ = 21423637225303 is a prime.

It is a super-2 number, since 2×21423637225319² (a number of 27 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 (21423637225313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114946097 + ... + 115132325.

It is an arithmetic number, because the mean of its divisors is an integer number (1041873046500).

Almost surely, 2^{21423637225319} is an apocalyptic number.

21423637225319 is a deficient number, since it is larger than the sum of its proper divisors (3581315890681).

21423637225319 is a wasteful number, since it uses less digits than its factorization.

21423637225319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194103 (or 194096 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 50.

The spelling of 21423637225319 in words is "twenty-one trillion, four hundred twenty-three billion, six hundred thirty-seven million, two hundred twenty-five thousand, three hundred nineteen".