22478901247727 has 2 divisors, whose sum is σ = 22478901247728. Its totient is φ = 22478901247726.

The previous prime is 22478901247723. The next prime is 22478901247867. The reversal of 22478901247727 is 72774210987422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22478901247727 - 2² = 22478901247723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22478901247727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22478901247723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11239450623863 + 11239450623864.

It is an arithmetic number, because the mean of its divisors is an integer number (11239450623864).

Almost surely, 2^{22478901247727} is an apocalyptic number.

22478901247727 is a deficient number, since it is larger than the sum of its proper divisors (1).

22478901247727 is an equidigital number, since it uses as much as digits as its factorization.

22478901247727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44255232, while the sum is 62.

The spelling of 22478901247727 in words is "twenty-two trillion, four hundred seventy-eight billion, nine hundred one million, two hundred forty-seven thousand, seven hundred twenty-seven".