26301455561 has 4 divisors (see below), whose sum is σ = 26417321232. Its totient is φ = 26185589892.

The previous prime is 26301455507. The next prime is 26301455563. The reversal of 26301455561 is 16555410362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26301455561 - 2³⁴ = 9121586377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26301455563) 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, 57932495 + ... + 57932948.

It is an arithmetic number, because the mean of its divisors is an integer number (6604330308).

Almost surely, 2^26301455561 is an apocalyptic number.

It is an amenable number.

26301455561 is a deficient number, since it is larger than the sum of its proper divisors (115865671).

26301455561 is a wasteful number, since it uses less digits than its factorization.

26301455561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115865670.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 26301455561 in words is "twenty-six billion, three hundred one million, four hundred fifty-five thousand, five hundred sixty-one".