15393401641997 has 2 divisors, whose sum is σ = 15393401641998. Its totient is φ = 15393401641996.

The previous prime is 15393401641909. The next prime is 15393401642009. The reversal of 15393401641997 is 79914610439351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15387214403716 + 6187238281 = 3922654^2 + 78659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15393401641997 is a prime.

It is a super-2 number, since 2×15393401641997² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15393401641297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7696700820998 + 7696700820999.

It is an arithmetic number, because the mean of its divisors is an integer number (7696700820999).

Almost surely, 2^{15393401641997} is an apocalyptic number.

It is an amenable number.

15393401641997 is a deficient number, since it is larger than the sum of its proper divisors (1).

15393401641997 is an equidigital number, since it uses as much as digits as its factorization.

15393401641997 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 15393401641997 in words is "fifteen trillion, three hundred ninety-three billion, four hundred one million, six hundred forty-one thousand, nine hundred ninety-seven".