20374932099599 has 32 divisors (see below), whose sum is σ = 25543756187136. Its totient is φ = 15788370971520.

The previous prime is 20374932099563. The next prime is 20374932099677. The reversal of 20374932099599 is 99599023947302.

It is a Cunningham number, because it is equal to 4513860²-1.

It is not a de Polignac number, because 20374932099599 - 2⁸ = 20374932099343 is a prime.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20374932599599) 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, 31274609 + ... + 31919445.

It is an arithmetic number, because the mean of its divisors is an integer number (798242380848).

Almost surely, 2^{20374932099599} is an apocalyptic number.

20374932099599 is a deficient number, since it is larger than the sum of its proper divisors (5168824087537).

20374932099599 is a wasteful number, since it uses less digits than its factorization.

20374932099599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647135.

The product of its (nonzero) digits is 297606960, while the sum is 71.

The spelling of 20374932099599 in words is "twenty trillion, three hundred seventy-four billion, nine hundred thirty-two million, ninety-nine thousand, five hundred ninety-nine".