15906466997 has 2 divisors, whose sum is σ = 15906466998. Its totient is φ = 15906466996.

The previous prime is 15906466913. The next prime is 15906466999. The reversal of 15906466997 is 79966460951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9511905841 + 6394561156 = 97529^2 + 79966^2 .

It is a cyclic number.

It is not a de Polignac number, because 15906466997 - 2²⁰ = 15905418421 is a prime.

Together with 15906466999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15906466999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7953233498 + 7953233499.

It is an arithmetic number, because the mean of its divisors is an integer number (7953233499).

Almost surely, 2^15906466997 is an apocalyptic number.

It is an amenable number.

15906466997 is a deficient number, since it is larger than the sum of its proper divisors (1).

15906466997 is an equidigital number, since it uses as much as digits as its factorization.

15906466997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22044960, while the sum is 62.

The spelling of 15906466997 in words is "fifteen billion, nine hundred six million, four hundred sixty-six thousand, nine hundred ninety-seven".