21839953130 has 16 divisors (see below), whose sum is σ = 39389158440. Its totient is φ = 8718816192.

The previous prime is 21839953081. The next prime is 21839953133. The reversal of 21839953130 is 3135993812.

It can be written as a sum of positive squares in 4 ways, for example, as 21170541001 + 669412129 = 145501^2 + 25873^2 .

It is not an unprimeable number, because it can be changed into a prime (21839953133) 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, 2140289 + ... + 2150468.

Almost surely, 2^21839953130 is an apocalyptic number.

21839953130 is a deficient number, since it is larger than the sum of its proper divisors (17549205310).

21839953130 is a wasteful number, since it uses less digits than its factorization.

21839953130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291273.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 21839953130 in words is "twenty-one billion, eight hundred thirty-nine million, nine hundred fifty-three thousand, one hundred thirty".