21262248530 has 16 divisors (see below), whose sum is σ = 38464372800. Its totient is φ = 8462160432.

The previous prime is 21262248523. The next prime is 21262248533. The reversal of 21262248530 is 3584226212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21262248533) 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, 5340284 + ... + 5344263.

It is an arithmetic number, because the mean of its divisors is an integer number (2404023300).

Almost surely, 2^21262248530 is an apocalyptic number.

21262248530 is a deficient number, since it is larger than the sum of its proper divisors (17202124270).

21262248530 is a wasteful number, since it uses less digits than its factorization.

21262248530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10684753.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 21262248530 in words is "twenty-one billion, two hundred sixty-two million, two hundred forty-eight thousand, five hundred thirty".