20111132004 has 24 divisors (see below), whose sum is σ = 46992935808. Its totient is φ = 6694144800.

The previous prime is 20111132003. The next prime is 20111132021. The reversal of 20111132004 is 40023111102.

It is not an unprimeable number, because it can be changed into a prime (20111132003) 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, 1186972 + ... + 1203795.

It is an arithmetic number, because the mean of its divisors is an integer number (1958038992).

Almost surely, 2^20111132004 is an apocalyptic number.

It is an amenable number.

20111132004 is an abundant number, since it is smaller than the sum of its proper divisors (26881803804).

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

20111132004 is a wasteful number, since it uses less digits than its factorization.

20111132004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391475 (or 2391473 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20111132004 its reverse (40023111102), we get a palindrome (60134243106).

The spelling of 20111132004 in words is "twenty billion, one hundred eleven million, one hundred thirty-two thousand, four".