20456364049 has 16 divisors (see below), whose sum is σ = 22804778880. Its totient is φ = 18191496960.

The previous prime is 20456364037. The next prime is 20456364053. The reversal of 20456364049 is 94046365402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20456364049 - 2⁵ = 20456364017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20456363996 and 20456364014.

It is not an unprimeable number, because it can be changed into a prime (20456364949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144412 + ... + 248530.

It is an arithmetic number, because the mean of its divisors is an integer number (1425298680).

Almost surely, 2^20456364049 is an apocalyptic number.

It is an amenable number.

20456364049 is a deficient number, since it is larger than the sum of its proper divisors (2348414831).

20456364049 is a wasteful number, since it uses less digits than its factorization.

20456364049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104520.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 20456364049 in words is "twenty billion, four hundred fifty-six million, three hundred sixty-four thousand, forty-nine".