26900466581 has 16 divisors (see below), whose sum is σ = 28281633408. Its totient is φ = 25562745600.

The previous prime is 26900466577. The next prime is 26900466587. The reversal of 26900466581 is 18566400962.

It is not a de Polignac number, because 26900466581 - 2² = 26900466577 is a prime.

It is a super-2 number, since 2×26900466581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26900466587) 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, 185945 + ... + 297281.

It is an arithmetic number, because the mean of its divisors is an integer number (1767602088).

Almost surely, 2^26900466581 is an apocalyptic number.

It is an amenable number.

26900466581 is a deficient number, since it is larger than the sum of its proper divisors (1381166827).

26900466581 is a wasteful number, since it uses less digits than its factorization.

26900466581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111532.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 26900466581 in words is "twenty-six billion, nine hundred million, four hundred sixty-six thousand, five hundred eighty-one".