26045404561 has 8 divisors (see below), whose sum is σ = 29181092544. Its totient is φ = 23037703920.

The previous prime is 26045404559. The next prime is 26045404589. The reversal of 26045404561 is 16540454062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26045404561 - 2¹ = 26045404559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26045404561.

It is not an unprimeable number, because it can be changed into a prime (26045404361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31996405 + ... + 31997218.

It is an arithmetic number, because the mean of its divisors is an integer number (3647636568).

Almost surely, 2^26045404561 is an apocalyptic number.

It is an amenable number.

26045404561 is a deficient number, since it is larger than the sum of its proper divisors (3135687983).

26045404561 is a wasteful number, since it uses less digits than its factorization.

26045404561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63993671.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 26045404561 in words is "twenty-six billion, forty-five million, four hundred four thousand, five hundred sixty-one".