26181627385 has 8 divisors (see below), whose sum is σ = 31424704200. Its totient is φ = 20940801024.

The previous prime is 26181627383. The next prime is 26181627389. The reversal of 26181627385 is 58372618162.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2829814416 + 23351812969 = 53196^2 + 152813^2 .

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 26181627385 - 2¹ = 26181627383 is a prime.

It is a super-2 number, since 2×26181627385² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26181627383) 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, 536910 + ... + 583639.

It is an arithmetic number, because the mean of its divisors is an integer number (3928088025).

Almost surely, 2^26181627385 is an apocalyptic number.

It is an amenable number.

26181627385 is a deficient number, since it is larger than the sum of its proper divisors (5243076815).

26181627385 is a wasteful number, since it uses less digits than its factorization.

26181627385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125227.

The product of its digits is 967680, while the sum is 49.

The spelling of 26181627385 in words is "twenty-six billion, one hundred eighty-one million, six hundred twenty-seven thousand, three hundred eighty-five".