15415600091 has 4 divisors (see below), whose sum is σ = 15416183112. Its totient is φ = 15415017072.

The previous prime is 15415600033. The next prime is 15415600111. The reversal of 15415600091 is 19000651451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19000651451 = 397 ⋅47860583.

It is a cyclic number.

It is not a de Polignac number, because 15415600091 - 2⁶ = 15415600027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15415605091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249866 + ... + 305391.

It is an arithmetic number, because the mean of its divisors is an integer number (3854045778).

Almost surely, 2^15415600091 is an apocalyptic number.

15415600091 is a deficient number, since it is larger than the sum of its proper divisors (583021).

15415600091 is an equidigital number, since it uses as much as digits as its factorization.

15415600091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583020.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 15415600091 in words is "fifteen billion, four hundred fifteen million, six hundred thousand, ninety-one".