15715397101 has 2 divisors, whose sum is σ = 15715397102. Its totient is φ = 15715397100.

The previous prime is 15715397099. The next prime is 15715397171. The reversal of 15715397101 is 10179351751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10125591876 + 5589805225 = 100626^2 + 74765^2 .

It is an emirp because it is prime and its reverse (10179351751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15715397101 - 2¹ = 15715397099 is a prime.

Together with 15715397099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15715397171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7857698550 + 7857698551.

It is an arithmetic number, because the mean of its divisors is an integer number (7857698551).

Almost surely, 2^15715397101 is an apocalyptic number.

It is an amenable number.

15715397101 is a deficient number, since it is larger than the sum of its proper divisors (1).

15715397101 is an equidigital number, since it uses as much as digits as its factorization.

15715397101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33075, while the sum is 40.

The spelling of 15715397101 in words is "fifteen billion, seven hundred fifteen million, three hundred ninety-seven thousand, one hundred one".