21626272499 has 8 divisors (see below), whose sum is σ = 23378390112. Its totient is φ = 19886806080.

The previous prime is 21626272489. The next prime is 21626272513. The reversal of 21626272499 is 99427262612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21626272499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21626272439) 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 7 ways as a sum of consecutive naturals, for example, 3159242 + ... + 3166079.

It is an arithmetic number, because the mean of its divisors is an integer number (2922298764).

Almost surely, 2^21626272499 is an apocalyptic number.

21626272499 is a deficient number, since it is larger than the sum of its proper divisors (1752117613).

21626272499 is a wasteful number, since it uses less digits than its factorization.

21626272499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325597.

The product of its digits is 1306368, while the sum is 50.

The spelling of 21626272499 in words is "twenty-one billion, six hundred twenty-six million, two hundred seventy-two thousand, four hundred ninety-nine".