21134052440004 has 48 divisors (see below), whose sum is σ = 57668112094208. Its totient is φ = 5897875098528.

The previous prime is 21134052439933. The next prime is 21134052440021. The reversal of 21134052440004 is 40004425043112.

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, 2925529672 + ... + 2925536895.

Almost surely, 2^{21134052440004} is an apocalyptic number.

It is an amenable number.

21134052440004 is an abundant number, since it is smaller than the sum of its proper divisors (36534059654204).

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

21134052440004 is a wasteful number, since it uses less digits than its factorization.

21134052440004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851066624 (or 5851066622 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 21134052440004 its reverse (40004425043112), we get a palindrome (61138477483116).

The spelling of 21134052440004 in words is "twenty-one trillion, one hundred thirty-four billion, fifty-two million, four hundred forty thousand, four".