19563792473 has 2 divisors, whose sum is σ = 19563792474. Its totient is φ = 19563792472.

The previous prime is 19563792467. The next prime is 19563792527. The reversal of 19563792473 is 37429736591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19318776064 + 245016409 = 138992^2 + 15653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19563792473 is a prime.

It is a super-2 number, since 2×19563792473² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19563792373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9781896236 + 9781896237.

It is an arithmetic number, because the mean of its divisors is an integer number (9781896237).

Almost surely, 2^19563792473 is an apocalyptic number.

It is an amenable number.

19563792473 is a deficient number, since it is larger than the sum of its proper divisors (1).

19563792473 is an equidigital number, since it uses as much as digits as its factorization.

19563792473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8573040, while the sum is 56.

The spelling of 19563792473 in words is "nineteen billion, five hundred sixty-three million, seven hundred ninety-two thousand, four hundred seventy-three".