20123400932713 has 4 divisors (see below), whose sum is σ = 21671354850628. Its totient is φ = 18575447014800.

The previous prime is 20123400932689. The next prime is 20123400932737. The reversal of 20123400932713 is 31723900432102.

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

It is an interprime number because it is at equal distance from previous prime (20123400932689) and next prime (20123400932737).

It can be written as a sum of positive squares in 2 ways, for example, as 6845925726784 + 13277475205929 = 2616472^2 + 3643827^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20123400932713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123400932773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773976958938 + ... + 773976958963.

It is an arithmetic number, because the mean of its divisors is an integer number (5417838712657).

Almost surely, 2^{20123400932713} is an apocalyptic number.

It is an amenable number.

20123400932713 is a deficient number, since it is larger than the sum of its proper divisors (1547953917915).

20123400932713 is a wasteful number, since it uses less digits than its factorization.

20123400932713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547953917914.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 20123400932713 in words is "twenty trillion, one hundred twenty-three billion, four hundred million, nine hundred thirty-two thousand, seven hundred thirteen".