22478479831 has 2 divisors, whose sum is σ = 22478479832. Its totient is φ = 22478479830.

The previous prime is 22478479787. The next prime is 22478479841. The reversal of 22478479831 is 13897487422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22478479831 - 2⁷ = 22478479703 is a prime.

It is a super-2 number, since 2×22478479831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22478479841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11239239915 + 11239239916.

It is an arithmetic number, because the mean of its divisors is an integer number (11239239916).

Almost surely, 2^22478479831 is an apocalyptic number.

22478479831 is a deficient number, since it is larger than the sum of its proper divisors (1).

22478479831 is an equidigital number, since it uses as much as digits as its factorization.

22478479831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 55.

The spelling of 22478479831 in words is "twenty-two billion, four hundred seventy-eight million, four hundred seventy-nine thousand, eight hundred thirty-one".