21910026249 has 24 divisors (see below), whose sum is σ = 32108529024. Its totient is φ = 14394240000.

The previous prime is 21910026221. The next prime is 21910026283. The reversal of 21910026249 is 94262001912.

21910026249 is a `hidden beast` number, since 2 + 19 + 10 + 0 + 2 + 624 + 9 = 666.

It is not a de Polignac number, because 21910026249 - 2²⁵ = 21876471817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21910026349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1623369 + ... + 1636809.

It is an arithmetic number, because the mean of its divisors is an integer number (1337855376).

Almost surely, 2^21910026249 is an apocalyptic number.

It is an amenable number.

21910026249 is a deficient number, since it is larger than the sum of its proper divisors (10198502775).

21910026249 is a wasteful number, since it uses less digits than its factorization.

21910026249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16069 (or 16066 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 21910026249 in words is "twenty-one billion, nine hundred ten million, twenty-six thousand, two hundred forty-nine".