20461120361156 has 48 divisors (see below), whose sum is σ = 36105407856000. Its totient is φ = 10145523268608.

The previous prime is 20461120361147. The next prime is 20461120361191. The reversal of 20461120361156 is 65116302116402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1155529655 + ... + 1155547361.

It is an arithmetic number, because the mean of its divisors is an integer number (752195997000).

Almost surely, 2^{20461120361156} is an apocalyptic number.

It is an amenable number.

20461120361156 is a deficient number, since it is larger than the sum of its proper divisors (15644287494844).

20461120361156 is a wasteful number, since it uses less digits than its factorization.

20461120361156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20876 (or 20874 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 20461120361156 its reverse (65116302116402), we get a palindrome (85577422477558).

The spelling of 20461120361156 in words is "twenty trillion, four hundred sixty-one billion, one hundred twenty million, three hundred sixty-one thousand, one hundred fifty-six".