22390040506949 has 2 divisors, whose sum is σ = 22390040506950. Its totient is φ = 22390040506948.

The previous prime is 22390040506919. The next prime is 22390040506973. The reversal of 22390040506949 is 94960504009322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21232576525924 + 1157463981025 = 4607882^2 + 1075855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22390040506949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22390040506949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22390040506919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11195020253474 + 11195020253475.

It is an arithmetic number, because the mean of its divisors is an integer number (11195020253475).

Almost surely, 2^{22390040506949} is an apocalyptic number.

It is an amenable number.

22390040506949 is a deficient number, since it is larger than the sum of its proper divisors (1).

22390040506949 is an equidigital number, since it uses as much as digits as its factorization.

22390040506949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 22390040506949 in words is "twenty-two trillion, three hundred ninety billion, forty million, five hundred six thousand, nine hundred forty-nine".