20345006326123 has 32 divisors (see below), whose sum is σ = 21138728889600. Its totient is φ = 19571736662016.

The previous prime is 20345006326093. The next prime is 20345006326171. The reversal of 20345006326123 is 32162360054302.

It is a cyclic number.

It is not a de Polignac number, because 20345006326123 - 2²⁵ = 20344972771691 is a prime.

It is a super-2 number, since 2×20345006326123² (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 (20345006396123) 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, 270929340 + ... + 271004422.

It is an arithmetic number, because the mean of its divisors is an integer number (660585277800).

Almost surely, 2^{20345006326123} is an apocalyptic number.

20345006326123 is a deficient number, since it is larger than the sum of its proper divisors (793722563477).

20345006326123 is a wasteful number, since it uses less digits than its factorization.

20345006326123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75771.

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 20345006326123 in words is "twenty trillion, three hundred forty-five billion, six million, three hundred twenty-six thousand, one hundred twenty-three".