21146004588 has 24 divisors (see below), whose sum is σ = 51042080880. Its totient is φ = 6805610560.

The previous prime is 21146004587. The next prime is 21146004599. The reversal of 21146004588 is 88540064112.

It is a super-3 number, since 3×21146004588³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21146004587) 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, 30381843 + ... + 30382538.

It is an arithmetic number, because the mean of its divisors is an integer number (2126753370).

Almost surely, 2^21146004588 is an apocalyptic number.

It is an amenable number.

21146004588 is an abundant number, since it is smaller than the sum of its proper divisors (29896076292).

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

21146004588 is a wasteful number, since it uses less digits than its factorization.

21146004588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60764417 (or 60764415 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The spelling of 21146004588 in words is "twenty-one billion, one hundred forty-six million, four thousand, five hundred eighty-eight".