15417541091 has 2 divisors, whose sum is σ = 15417541092. Its totient is φ = 15417541090.

The previous prime is 15417541049. The next prime is 15417541109. The reversal of 15417541091 is 19014571451.

Together with next prime (15417541109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15417541091 is a prime.

It is not a weakly prime, because it can be changed into another prime (15417541001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7708770545 + 7708770546.

It is an arithmetic number, because the mean of its divisors is an integer number (7708770546).

Almost surely, 2^15417541091 is an apocalyptic number.

15417541091 is a deficient number, since it is larger than the sum of its proper divisors (1).

15417541091 is an equidigital number, since it uses as much as digits as its factorization.

15417541091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 38.

The spelling of 15417541091 in words is "fifteen billion, four hundred seventeen million, five hundred forty-one thousand, ninety-one".