15205341091 has 2 divisors, whose sum is σ = 15205341092. Its totient is φ = 15205341090.

The previous prime is 15205341089. The next prime is 15205341163. The reversal of 15205341091 is 19014350251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15205341091 - 2¹ = 15205341089 is a prime.

Together with 15205341089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15205341061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7602670545 + 7602670546.

It is an arithmetic number, because the mean of its divisors is an integer number (7602670546).

Almost surely, 2^15205341091 is an apocalyptic number.

15205341091 is a deficient number, since it is larger than the sum of its proper divisors (1).

15205341091 is an equidigital number, since it uses as much as digits as its factorization.

15205341091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 15205341091 in words is "fifteen billion, two hundred five million, three hundred forty-one thousand, ninety-one".