26698340786 has 16 divisors (see below), whose sum is σ = 44293714584. Its totient is φ = 11989275264.

The previous prime is 26698340783. The next prime is 26698340797. The reversal of 26698340786 is 68704389662.

It can be written as a sum of positive squares in 4 ways, for example, as 26694658225 + 3682561 = 163385^2 + 1919^2 .

It is not an unprimeable number, because it can be changed into a prime (26698340783) 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, 13875515 + ... + 13877438.

Almost surely, 2^26698340786 is an apocalyptic number.

26698340786 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

26698340786 is a deficient number, since it is larger than the sum of its proper divisors (17595373798).

26698340786 is a wasteful number, since it uses less digits than its factorization.

26698340786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27753005.

The product of its (nonzero) digits is 20901888, while the sum is 59.

The spelling of 26698340786 in words is "twenty-six billion, six hundred ninety-eight million, three hundred forty thousand, seven hundred eighty-six".