21560044130 has 32 divisors (see below), whose sum is σ = 41467924080. Its totient is φ = 8042250240.

The previous prime is 21560044127. The next prime is 21560044133. The reversal of 21560044130 is 3144006512.

It is an interprime number because it is at equal distance from previous prime (21560044127) and next prime (21560044133).

It can be written as a sum of positive squares in 8 ways, for example, as 16022749561 + 5537294569 = 126581^2 + 74413^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21560044130.

It is not an unprimeable number, because it can be changed into a prime (21560044133) 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, 563231 + ... + 600290.

Almost surely, 2^21560044130 is an apocalyptic number.

21560044130 is a deficient number, since it is larger than the sum of its proper divisors (19907879950).

21560044130 is a wasteful number, since it uses less digits than its factorization.

21560044130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163654.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 21560044130 in words is "twenty-one billion, five hundred sixty million, forty-four thousand, one hundred thirty".