26405196668 has 12 divisors (see below), whose sum is σ = 47457988872. Its totient is φ = 12845771280.

The previous prime is 26405196661. The next prime is 26405196677. The reversal of 26405196668 is 86669150462.

It is a super-2 number, since 2×26405196668² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26405196661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89206598 + ... + 89206893.

It is an arithmetic number, because the mean of its divisors is an integer number (3954832406).

Almost surely, 2^26405196668 is an apocalyptic number.

It is an amenable number.

26405196668 is a deficient number, since it is larger than the sum of its proper divisors (21052792204).

26405196668 is a wasteful number, since it uses less digits than its factorization.

26405196668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178413532 (or 178413530 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 26405196668 in words is "twenty-six billion, four hundred five million, one hundred ninety-six thousand, six hundred sixty-eight".