15655350397 has 2 divisors, whose sum is σ = 15655350398. Its totient is φ = 15655350396.

The previous prime is 15655350383. The next prime is 15655350421. The reversal of 15655350397 is 79305355651.

15655350397 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 can be written as a sum of positive squares in only one way, i.e., 15171834276 + 483516121 = 123174^2 + 21989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15655350397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15655350397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15655350377) 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, 7827675198 + 7827675199.

It is an arithmetic number, because the mean of its divisors is an integer number (7827675199).

Almost surely, 2^15655350397 is an apocalyptic number.

It is an amenable number.

15655350397 is a deficient number, since it is larger than the sum of its proper divisors (1).

15655350397 is an equidigital number, since it uses as much as digits as its factorization.

15655350397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2126250, while the sum is 49.

The spelling of 15655350397 in words is "fifteen billion, six hundred fifty-five million, three hundred fifty thousand, three hundred ninety-seven".