26668735506 has 48 divisors (see below), whose sum is σ = 66069432000. Its totient is φ = 7615881504.

The previous prime is 26668735481. The next prime is 26668735507. The reversal of 26668735506 is 60553786662.

It is a happy number.

It is a super-2 number, since 2×26668735506² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26668735507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209545 + ... + 311843.

It is an arithmetic number, because the mean of its divisors is an integer number (1376446500).

Almost surely, 2^26668735506 is an apocalyptic number.

26668735506 is an abundant number, since it is smaller than the sum of its proper divisors (39400696494).

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

26668735506 is a wasteful number, since it uses less digits than its factorization.

26668735506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104383 (or 104380 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 26668735506 in words is "twenty-six billion, six hundred sixty-eight million, seven hundred thirty-five thousand, five hundred six".