20723774416131 has 4 divisors (see below), whose sum is σ = 27631699221512. Its totient is φ = 13815849610752.

The previous prime is 20723774416127. The next prime is 20723774416133. The reversal of 20723774416131 is 13161447732702.

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

It is not a de Polignac number, because 20723774416131 - 2² = 20723774416127 is a prime.

It is a super-2 number, since 2×20723774416131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20723774416133) 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, 3453962402686 + ... + 3453962402691.

It is an arithmetic number, because the mean of its divisors is an integer number (6907924805378).

Almost surely, 2^{20723774416131} is an apocalyptic number.

20723774416131 is a deficient number, since it is larger than the sum of its proper divisors (6907924805381).

20723774416131 is an equidigital number, since it uses as much as digits as its factorization.

20723774416131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6907924805380.

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 20723774416131 in words is "twenty trillion, seven hundred twenty-three billion, seven hundred seventy-four million, four hundred sixteen thousand, one hundred thirty-one".