15415605091 has 2 divisors, whose sum is σ = 15415605092. Its totient is φ = 15415605090.

The previous prime is 15415605071. The next prime is 15415605119. The reversal of 15415605091 is 19050651451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15415605091 - 2⁹ = 15415604579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15415605091.

It is not a weakly prime, because it can be changed into another prime (15415605061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7707802545 + 7707802546.

It is an arithmetic number, because the mean of its divisors is an integer number (7707802546).

Almost surely, 2^15415605091 is an apocalyptic number.

15415605091 is a deficient number, since it is larger than the sum of its proper divisors (1).

15415605091 is an equidigital number, since it uses as much as digits as its factorization.

15415605091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 15415605091 in words is "fifteen billion, four hundred fifteen million, six hundred five thousand, ninety-one".