20616405122 has 16 divisors (see below), whose sum is σ = 31018401792. Its totient is φ = 10276961280.

The previous prime is 20616405071. The next prime is 20616405149. The reversal of 20616405122 is 22150461602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593538 + ... + 2601474.

It is an arithmetic number, because the mean of its divisors is an integer number (1938650112).

Almost surely, 2^20616405122 is an apocalyptic number.

20616405122 is a deficient number, since it is larger than the sum of its proper divisors (10401996670).

20616405122 is a wasteful number, since it uses less digits than its factorization.

20616405122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11713.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 20616405122 its reverse (22150461602), we get a palindrome (42766866724).

The spelling of 20616405122 in words is "twenty billion, six hundred sixteen million, four hundred five thousand, one hundred twenty-two".