26541522161 has 32 divisors (see below), whose sum is σ = 35489664000. Its totient is φ = 19223455680.

The previous prime is 26541522157. The next prime is 26541522173. The reversal of 26541522161 is 16122514562.

It is not a de Polignac number, because 26541522161 - 2² = 26541522157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26541522191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93611 + ... + 248688.

It is an arithmetic number, because the mean of its divisors is an integer number (1109052000).

Almost surely, 2^26541522161 is an apocalyptic number.

It is an amenable number.

26541522161 is a deficient number, since it is larger than the sum of its proper divisors (8948141839).

26541522161 is a wasteful number, since it uses less digits than its factorization.

26541522161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342389.

The product of its digits is 28800, while the sum is 35.

The spelling of 26541522161 in words is "twenty-six billion, five hundred forty-one million, five hundred twenty-two thousand, one hundred sixty-one".