21583077116 has 12 divisors (see below), whose sum is σ = 37914000432. Its totient is φ = 10750505568.

The previous prime is 21583077097. The next prime is 21583077119. The reversal of 21583077116 is 61177038512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21583077119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10257065 + ... + 10259168.

It is an arithmetic number, because the mean of its divisors is an integer number (3159500036).

Almost surely, 2^21583077116 is an apocalyptic number.

It is an amenable number.

21583077116 is a deficient number, since it is larger than the sum of its proper divisors (16330923316).

21583077116 is a wasteful number, since it uses less digits than its factorization.

21583077116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20516500 (or 20516498 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 21583077116 in words is "twenty-one billion, five hundred eighty-three million, seventy-seven thousand, one hundred sixteen".