21882500639 has 4 divisors (see below), whose sum is σ = 22008989256. Its totient is φ = 21756012024.

The previous prime is 21882500611. The next prime is 21882500671. The reversal of 21882500639 is 93600528812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21882500639 - 2²⁴ = 21865723423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21882500639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21882500699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63244049 + ... + 63244394.

It is an arithmetic number, because the mean of its divisors is an integer number (5502247314).

Almost surely, 2^21882500639 is an apocalyptic number.

21882500639 is a deficient number, since it is larger than the sum of its proper divisors (126488617).

21882500639 is a wasteful number, since it uses less digits than its factorization.

21882500639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126488616.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 21882500639 in words is "twenty-one billion, eight hundred eighty-two million, five hundred thousand, six hundred thirty-nine".