26112513561 has 16 divisors (see below), whose sum is σ = 36937728000. Its totient is φ = 16362250128.

The previous prime is 26112513541. The next prime is 26112513569. The reversal of 26112513561 is 16531521162.

It is not a de Polignac number, because 26112513561 - 2¹⁰ = 26112512537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26112513569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1796361 + ... + 1810838.

It is an arithmetic number, because the mean of its divisors is an integer number (2308608000).

Almost surely, 2^26112513561 is an apocalyptic number.

It is an amenable number.

26112513561 is a deficient number, since it is larger than the sum of its proper divisors (10825214439).

26112513561 is a wasteful number, since it uses less digits than its factorization.

26112513561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607348.

The product of its digits is 10800, while the sum is 33.

The spelling of 26112513561 in words is "twenty-six billion, one hundred twelve million, five hundred thirteen thousand, five hundred sixty-one".