19712691503 has 2 divisors, whose sum is σ = 19712691504. Its totient is φ = 19712691502.

The previous prime is 19712691457. The next prime is 19712691511. The reversal of 19712691503 is 30519621791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19712691503 - 2²⁶ = 19645582639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19712691563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9856345751 + 9856345752.

It is an arithmetic number, because the mean of its divisors is an integer number (9856345752).

Almost surely, 2^19712691503 is an apocalyptic number.

19712691503 is a deficient number, since it is larger than the sum of its proper divisors (1).

19712691503 is an equidigital number, since it uses as much as digits as its factorization.

19712691503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The spelling of 19712691503 in words is "nineteen billion, seven hundred twelve million, six hundred ninety-one thousand, five hundred three".