26148446091 has 24 divisors (see below), whose sum is σ = 39018297344. Its totient is φ = 16857013680.

The previous prime is 26148446047. The next prime is 26148446117. The reversal of 26148446091 is 19064484162.

26148446091 is a `hidden beast` number, since 2 + 61 + 48 + 4 + 460 + 91 = 666.

It is not a de Polignac number, because 26148446091 - 2¹⁰ = 26148445067 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26148446021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334920 + ... + 405546.

Almost surely, 2^26148446091 is an apocalyptic number.

26148446091 is a deficient number, since it is larger than the sum of its proper divisors (12869851253).

26148446091 is a wasteful number, since it uses less digits than its factorization.

26148446091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71991 (or 71988 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 26148446091 in words is "twenty-six billion, one hundred forty-eight million, four hundred forty-six thousand, ninety-one".