15990425432803 has 2 divisors, whose sum is σ = 15990425432804. Its totient is φ = 15990425432802.

The previous prime is 15990425432791. The next prime is 15990425432837. The reversal of 15990425432803 is 30823452409951.

15990425432803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15990425432803 is a prime.

It is not a weakly prime, because it can be changed into another prime (15990425432893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7995212716401 + 7995212716402.

It is an arithmetic number, because the mean of its divisors is an integer number (7995212716402).

Almost surely, 2^{15990425432803} is an apocalyptic number.

15990425432803 is a deficient number, since it is larger than the sum of its proper divisors (1).

15990425432803 is an equidigital number, since it uses as much as digits as its factorization.

15990425432803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 15990425432803 in words is "fifteen trillion, nine hundred ninety billion, four hundred twenty-five million, four hundred thirty-two thousand, eight hundred three".