20396344373 has 2 divisors, whose sum is σ = 20396344374. Its totient is φ = 20396344372.

The previous prime is 20396344277. The next prime is 20396344379. The reversal of 20396344373 is 37344369302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19732663729 + 663680644 = 140473^2 + 25762^2 .

It is a cyclic number.

It is not a de Polignac number, because 20396344373 - 2²² = 20392150069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20396344379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10198172186 + 10198172187.

It is an arithmetic number, because the mean of its divisors is an integer number (10198172187).

Almost surely, 2^20396344373 is an apocalyptic number.

It is an amenable number.

20396344373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20396344373 is an equidigital number, since it uses as much as digits as its factorization.

20396344373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 44.

The spelling of 20396344373 in words is "twenty billion, three hundred ninety-six million, three hundred forty-four thousand, three hundred seventy-three".