22439191971 has 32 divisors (see below), whose sum is σ = 34803596800. Its totient is φ = 12594548736.

The previous prime is 22439191963. The next prime is 22439191991. The reversal of 22439191971 is 17919193422.

It is not a de Polignac number, because 22439191971 - 2³ = 22439191963 is a prime.

It is a super-2 number, since 2×22439191971² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22439191971.

It is not an unprimeable number, because it can be changed into a prime (22439191991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468195 + ... + 513891.

It is an arithmetic number, because the mean of its divisors is an integer number (1087612400).

Almost surely, 2^22439191971 is an apocalyptic number.

22439191971 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22439191971 is a deficient number, since it is larger than the sum of its proper divisors (12364404829).

22439191971 is a wasteful number, since it uses less digits than its factorization.

22439191971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46123.

The product of its digits is 244944, while the sum is 48.

The spelling of 22439191971 in words is "twenty-two billion, four hundred thirty-nine million, one hundred ninety-one thousand, nine hundred seventy-one".