26607340638 has 24 divisors (see below), whose sum is σ = 57653451648. Its totient is φ = 8868465312.

The previous prime is 26607340637. The next prime is 26607340649. The reversal of 26607340638 is 83604370662.

26607340638 is a `hidden beast` number, since 2 + 6 + 6 + 0 + 7 + 3 + 4 + 0 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 26607340593 and 26607340602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26607340637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243331 + ... + 335297.

It is an arithmetic number, because the mean of its divisors is an integer number (2402227152).

Almost surely, 2^26607340638 is an apocalyptic number.

26607340638 is an abundant number, since it is smaller than the sum of its proper divisors (31046111010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26607340638 is a wasteful number, since it uses less digits than its factorization.

26607340638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108048 (or 108045 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 26607340638 in words is "twenty-six billion, six hundred seven million, three hundred forty thousand, six hundred thirty-eight".