15721275112783 has 2 divisors, whose sum is σ = 15721275112784. Its totient is φ = 15721275112782.

The previous prime is 15721275112687. The next prime is 15721275112793. The reversal of 15721275112783 is 38721157212751.

15721275112783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15721275112783 - 2³³ = 15712685178191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15721275112783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15721275112793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7860637556391 + 7860637556392.

It is an arithmetic number, because the mean of its divisors is an integer number (7860637556392).

Almost surely, 2^{15721275112783} is an apocalyptic number.

15721275112783 is a deficient number, since it is larger than the sum of its proper divisors (1).

15721275112783 is an equidigital number, since it uses as much as digits as its factorization.

15721275112783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1646400, while the sum is 52.

The spelling of 15721275112783 in words is "fifteen trillion, seven hundred twenty-one billion, two hundred seventy-five million, one hundred twelve thousand, seven hundred eighty-three".