19672712573 has 2 divisors, whose sum is σ = 19672712574. Its totient is φ = 19672712572.

The previous prime is 19672712551. The next prime is 19672712593. The reversal of 19672712573 is 37521727691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13095826969 + 6576885604 = 114437^2 + 81098^2 .

It is a cyclic number.

It is not a de Polignac number, because 19672712573 - 2⁸ = 19672712317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19672712503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9836356286 + 9836356287.

It is an arithmetic number, because the mean of its divisors is an integer number (9836356287).

Almost surely, 2^19672712573 is an apocalyptic number.

It is an amenable number.

19672712573 is a deficient number, since it is larger than the sum of its proper divisors (1).

19672712573 is an equidigital number, since it uses as much as digits as its factorization.

19672712573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 50.

The spelling of 19672712573 in words is "nineteen billion, six hundred seventy-two million, seven hundred twelve thousand, five hundred seventy-three".