20344162245465 has 128 divisors (see below), whose sum is σ = 33677128166400. Its totient is φ = 10483619328000.

The previous prime is 20344162245419. The next prime is 20344162245497. The reversal of 20344162245465 is 56454226144302.

It is a happy number.

It is not a de Polignac number, because 20344162245465 - 2⁶ = 20344162245401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4677892111 + ... + 4677896459.

It is an arithmetic number, because the mean of its divisors is an integer number (263102563800).

Almost surely, 2^{20344162245465} is an apocalyptic number.

It is an amenable number.

20344162245465 is a deficient number, since it is larger than the sum of its proper divisors (13332965920935).

20344162245465 is a wasteful number, since it uses less digits than its factorization.

20344162245465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4963.

The product of its (nonzero) digits is 5529600, while the sum is 48.

Adding to 20344162245465 its reverse (56454226144302), we get a palindrome (76798388389767).

The spelling of 20344162245465 in words is "twenty trillion, three hundred forty-four billion, one hundred sixty-two million, two hundred forty-five thousand, four hundred sixty-five".