20423013373277 has 4 divisors (see below), whose sum is σ = 20921135650716. Its totient is φ = 19924891095840.

The previous prime is 20423013373201. The next prime is 20423013373337. The reversal of 20423013373277 is 77237331032402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7170457528441 + 13252555844836 = 2677771^2 + 3640406^2 .

It is a cyclic number.

It is not a de Polignac number, because 20423013373277 - 2¹⁸ = 20423013111133 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 (20423013373177) 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, 249061138658 + ... + 249061138739.

It is an arithmetic number, because the mean of its divisors is an integer number (5230283912679).

Almost surely, 2^{20423013373277} is an apocalyptic number.

It is an amenable number.

20423013373277 is a deficient number, since it is larger than the sum of its proper divisors (498122277439).

20423013373277 is an equidigital number, since it uses as much as digits as its factorization.

20423013373277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498122277438.

The product of its (nonzero) digits is 889056, while the sum is 44.

The spelling of 20423013373277 in words is "twenty trillion, four hundred twenty-three billion, thirteen million, three hundred seventy-three thousand, two hundred seventy-seven".