20449102397759 has 16 divisors (see below), whose sum is σ = 23699797019136. Its totient is φ = 17280761215200.

The previous prime is 20449102397753. The next prime is 20449102397767. The reversal of 20449102397759 is 95779320194402.

It is not a de Polignac number, because 20449102397759 - 2²⁸ = 20448833962303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20449102397753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100322504 + ... + 100526130.

It is an arithmetic number, because the mean of its divisors is an integer number (1481237313696).

Almost surely, 2^{20449102397759} is an apocalyptic number.

20449102397759 is a deficient number, since it is larger than the sum of its proper divisors (3250694621377).

20449102397759 is a wasteful number, since it uses less digits than its factorization.

20449102397759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405766.

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 20449102397759 in words is "twenty trillion, four hundred forty-nine billion, one hundred two million, three hundred ninety-seven thousand, seven hundred fifty-nine".