26087567561 has 8 divisors (see below), whose sum is σ = 28583443200. Its totient is φ = 23612405040.

The previous prime is 26087567557. The next prime is 26087567573. The reversal of 26087567561 is 16576578062.

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

It is a cyclic number.

It is not a de Polignac number, because 26087567561 - 2² = 26087567557 is a prime.

It is a super-2 number, since 2×26087567561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26087567551) 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, 5175641 + ... + 5180678.

It is an arithmetic number, because the mean of its divisors is an integer number (3572930400).

Almost surely, 2^26087567561 is an apocalyptic number.

It is an amenable number.

26087567561 is a deficient number, since it is larger than the sum of its proper divisors (2495875639).

26087567561 is a wasteful number, since it uses less digits than its factorization.

26087567561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10356559.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 26087567561 in words is "twenty-six billion, eighty-seven million, five hundred sixty-seven thousand, five hundred sixty-one".