21423543130 has 32 divisors (see below), whose sum is σ = 42231792960. Its totient is φ = 7760056320.

The previous prime is 21423543067. The next prime is 21423543133. The reversal of 21423543130 is 3134532412.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21423543133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350640 + ... + 407179.

It is an arithmetic number, because the mean of its divisors is an integer number (1319743530).

Almost surely, 2^21423543130 is an apocalyptic number.

21423543130 is a deficient number, since it is larger than the sum of its proper divisors (20808249830).

21423543130 is a wasteful number, since it uses less digits than its factorization.

21423543130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758094.

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 21423543130 in words is "twenty-one billion, four hundred twenty-three million, five hundred forty-three thousand, one hundred thirty".