26838067861 has 16 divisors (see below), whose sum is σ = 30103617600. Its totient is φ = 23714569600.

The previous prime is 26838067847. The next prime is 26838067871. The reversal of 26838067861 is 16876083862.

It is a cyclic number.

It is not a de Polignac number, because 26838067861 - 2⁵ = 26838067829 is a prime.

It is a super-2 number, since 2×26838067861² (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 (26838067801) 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, 10710 + ... + 231928.

It is an arithmetic number, because the mean of its divisors is an integer number (1881476100).

Almost surely, 2^26838067861 is an apocalyptic number.

It is an amenable number.

26838067861 is a deficient number, since it is larger than the sum of its proper divisors (3265549739).

26838067861 is a wasteful number, since it uses less digits than its factorization.

26838067861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221540.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 26838067861 in words is "twenty-six billion, eight hundred thirty-eight million, sixty-seven thousand, eight hundred sixty-one".