26416825781 has 8 divisors (see below), whose sum is σ = 26981915520. Its totient is φ = 25851862368.

The previous prime is 26416825777. The next prime is 26416825891. The reversal of 26416825781 is 18752861462.

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 26416825781 - 2² = 26416825777 is a prime.

It is a super-2 number, since 2×26416825781² (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 (26416825711) 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, 478070 + ... + 530456.

It is an arithmetic number, because the mean of its divisors is an integer number (3372739440).

Almost surely, 2^26416825781 is an apocalyptic number.

It is an amenable number.

26416825781 is a deficient number, since it is larger than the sum of its proper divisors (565089739).

26416825781 is a wasteful number, since it uses less digits than its factorization.

26416825781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63163.

The product of its digits is 1290240, while the sum is 50.

The spelling of 26416825781 in words is "twenty-six billion, four hundred sixteen million, eight hundred twenty-five thousand, seven hundred eighty-one".