20422655134465 has 16 divisors (see below), whose sum is σ = 25105103044560. Its totient is φ = 15939518586880.

The previous prime is 20422655134447. The next prime is 20422655134477. The reversal of 20422655134465 is 56443155622402.

It can be written as a sum of positive squares in 8 ways, for example, as 3526459456 + 20419128675009 = 59384^2 + 4518753^2 .

It is not a de Polignac number, because 20422655134465 - 2³⁵ = 20388295396097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38400747 + ... + 38928943.

It is an arithmetic number, because the mean of its divisors is an integer number (1569068940285).

Almost surely, 2^{20422655134465} is an apocalyptic number.

It is an amenable number.

20422655134465 is a deficient number, since it is larger than the sum of its proper divisors (4682447910095).

20422655134465 is a wasteful number, since it uses less digits than its factorization.

20422655134465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716852.

The product of its (nonzero) digits is 6912000, while the sum is 49.

The spelling of 20422655134465 in words is "twenty trillion, four hundred twenty-two billion, six hundred fifty-five million, one hundred thirty-four thousand, four hundred sixty-five".