15997000127 has 2 divisors, whose sum is σ = 15997000128. Its totient is φ = 15997000126.

The previous prime is 15997000099. The next prime is 15997000139. The reversal of 15997000127 is 72100079951.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15997000127 - 2¹² = 15996996031 is a prime.

It is a super-2 number, since 2×15997000127² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15997000147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7998500063 + 7998500064.

It is an arithmetic number, because the mean of its divisors is an integer number (7998500064).

Almost surely, 2^15997000127 is an apocalyptic number.

15997000127 is a deficient number, since it is larger than the sum of its proper divisors (1).

15997000127 is an equidigital number, since it uses as much as digits as its factorization.

15997000127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 41.

The spelling of 15997000127 in words is "fifteen billion, nine hundred ninety-seven million, one hundred twenty-seven", and thus it is an aban number.