20408268373 has 6 divisors (see below), whose sum is σ = 20423030082. Its totient is φ = 20393516880.

The previous prime is 20408268367. The next prime is 20408268383. The reversal of 20408268373 is 37386280402.

It can be written as a sum of positive squares in 3 ways, for example, as 145924 + 20408122449 = 382^2 + 142857^2 .

It is not a de Polignac number, because 20408268373 - 2⁹ = 20408267861 is a prime.

It is a super-3 number, since 3×20408268373³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20408268323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3027715 + ... + 3034447.

It is an arithmetic number, because the mean of its divisors is an integer number (3403838347).

Almost surely, 2^20408268373 is an apocalyptic number.

It is an amenable number.

20408268373 is a deficient number, since it is larger than the sum of its proper divisors (14761709).

20408268373 is an frugal number, since it uses more digits than its factorization.

20408268373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10215 (or 8474 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 20408268373 in words is "twenty billion, four hundred eight million, two hundred sixty-eight thousand, three hundred seventy-three".