20392748473 has 2 divisors, whose sum is σ = 20392748474. Its totient is φ = 20392748472.

The previous prime is 20392748471. The next prime is 20392748557. The reversal of 20392748473 is 37484729302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15070754169 + 5321994304 = 122763^2 + 72952^2 .

It is a cyclic number.

It is not a de Polignac number, because 20392748473 - 2¹ = 20392748471 is a prime.

Together with 20392748471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20392748471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10196374236 + 10196374237.

It is an arithmetic number, because the mean of its divisors is an integer number (10196374237).

Almost surely, 2^20392748473 is an apocalyptic number.

It is an amenable number.

20392748473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20392748473 is an equidigital number, since it uses as much as digits as its factorization.

20392748473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 20392748473 in words is "twenty billion, three hundred ninety-two million, seven hundred forty-eight thousand, four hundred seventy-three".