20411138976 has 48 divisors (see below), whose sum is σ = 53777017728. Its totient is φ = 6778598400.

The previous prime is 20411138959. The next prime is 20411138977. The reversal of 20411138976 is 67983111402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×20411138976² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20411138977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366265 + ... + 418296.

It is an arithmetic number, because the mean of its divisors is an integer number (1120354536).

Almost surely, 2^20411138976 is an apocalyptic number.

It is an amenable number.

20411138976 is an abundant number, since it is smaller than the sum of its proper divisors (33365878752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20411138976 is a wasteful number, since it uses less digits than its factorization.

20411138976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784845 (or 784837 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 20411138976 in words is "twenty billion, four hundred eleven million, one hundred thirty-eight thousand, nine hundred seventy-six".