21403858130 has 32 divisors (see below), whose sum is σ = 38891337408. Its totient is φ = 8480804800.

The previous prime is 21403858051. The next prime is 21403858141. The reversal of 21403858130 is 3185830412.

It is a happy number.

It is a Curzon number.

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, 723020 + ... + 752040.

It is an arithmetic number, because the mean of its divisors is an integer number (1215354294).

Almost surely, 2^21403858130 is an apocalyptic number.

21403858130 is a deficient number, since it is larger than the sum of its proper divisors (17487479278).

21403858130 is a wasteful number, since it uses less digits than its factorization.

21403858130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29722.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 21403858130 in words is "twenty-one billion, four hundred three million, eight hundred fifty-eight thousand, one hundred thirty".