16244208923391 has 32 divisors (see below), whose sum is σ = 25443695020800. Its totient is φ = 10214304262560.

The previous prime is 16244208923359. The next prime is 16244208923413. The reversal of 16244208923391 is 19332980244261.

It is a happy number.

16244208923391 is a `hidden beast` number, since 1 + 6 + 2 + 44 + 208 + 9 + 2 + 3 + 391 = 666.

It is not a de Polignac number, because 16244208923391 - 2⁵ = 16244208923359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16244208923321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69630520 + ... + 69863421.

It is an arithmetic number, because the mean of its divisors is an integer number (795115469400).

Almost surely, 2^{16244208923391} is an apocalyptic number.

16244208923391 is a deficient number, since it is larger than the sum of its proper divisors (9199486097409).

16244208923391 is a wasteful number, since it uses less digits than its factorization.

16244208923391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139494196 (or 139494190 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 16244208923391 in words is "sixteen trillion, two hundred forty-four billion, two hundred eight million, nine hundred twenty-three thousand, three hundred ninety-one".