20431534514199 has 4 divisors (see below), whose sum is σ = 27242046018936. Its totient is φ = 13621023009464.

The previous prime is 20431534514173. The next prime is 20431534514201. The reversal of 20431534514199 is 99141543513402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20431534514199 - 2³⁷ = 20294095560727 is a prime.

It is a super-2 number, since 2×20431534514199² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431533514199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3405255752364 + ... + 3405255752369.

It is an arithmetic number, because the mean of its divisors is an integer number (6810511504734).

Almost surely, 2^{20431534514199} is an apocalyptic number.

20431534514199 is a deficient number, since it is larger than the sum of its proper divisors (6810511504737).

20431534514199 is an equidigital number, since it uses as much as digits as its factorization.

20431534514199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6810511504736.

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 20431534514199 in words is "twenty trillion, four hundred thirty-one billion, five hundred thirty-four million, five hundred fourteen thousand, one hundred ninety-nine".