20331440012999 has 4 divisors (see below), whose sum is σ = 20353757730720. Its totient is φ = 20309122295280.

The previous prime is 20331440012981. The next prime is 20331440013023. The reversal of 20331440012999 is 99921004413302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331440012999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331440011999) 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, 11158857494 + ... + 11158859315.

It is an arithmetic number, because the mean of its divisors is an integer number (5088439432680).

Almost surely, 2^{20331440012999} is an apocalyptic number.

20331440012999 is a deficient number, since it is larger than the sum of its proper divisors (22317717721).

20331440012999 is an equidigital number, since it uses as much as digits as its factorization.

20331440012999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22317717720.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 20331440012999 in words is "twenty trillion, three hundred thirty-one billion, four hundred forty million, twelve thousand, nine hundred ninety-nine".