21130143045 has 32 divisors (see below), whose sum is σ = 36888238080. Its totient is φ = 10243103040.

The previous prime is 21130143031. The next prime is 21130143049. The reversal of 21130143045 is 54034103112.

It is a happy number.

It is not a de Polignac number, because 21130143045 - 2¹⁶ = 21130077509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130143049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1737496 + ... + 1749614.

It is an arithmetic number, because the mean of its divisors is an integer number (1152757440).

Almost surely, 2^21130143045 is an apocalyptic number.

It is an amenable number.

21130143045 is a deficient number, since it is larger than the sum of its proper divisors (15758095035).

21130143045 is a wasteful number, since it uses less digits than its factorization.

21130143045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22705.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21130143045 its reverse (54034103112), we get a palindrome (75164246157).

The spelling of 21130143045 in words is "twenty-one billion, one hundred thirty million, one hundred forty-three thousand, forty-five".