113204205649 has 2 divisors, whose sum is σ = 113204205650. Its totient is φ = 113204205648.

The previous prime is 113204205641. The next prime is 113204205659. The reversal of 113204205649 is 946502402311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112984721424 + 219484225 = 336132^2 + 14815^2 .

It is an emirp because it is prime and its reverse (946502402311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113204205649 - 2³ = 113204205641 is a prime.

It is a super-2 number, since 2×113204205649² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113204205641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56602102824 + 56602102825.

It is an arithmetic number, because the mean of its divisors is an integer number (56602102825).

Almost surely, 2^113204205649 is an apocalyptic number.

It is an amenable number.

113204205649 is a deficient number, since it is larger than the sum of its proper divisors (1).

113204205649 is an equidigital number, since it uses as much as digits as its factorization.

113204205649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 113204205649 in words is "one hundred thirteen billion, two hundred four million, two hundred five thousand, six hundred forty-nine".