26663345412 has 24 divisors (see below), whose sum is σ = 67870334112. Its totient is φ = 8079801600.

The previous prime is 26663345399. The next prime is 26663345413. The reversal of 26663345412 is 21454336662.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (26663345413) 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, 100997389 + ... + 100997652.

It is an arithmetic number, because the mean of its divisors is an integer number (2827930588).

Almost surely, 2^26663345412 is an apocalyptic number.

26663345412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

26663345412 is an abundant number, since it is smaller than the sum of its proper divisors (41206988700).

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

26663345412 is a wasteful number, since it uses less digits than its factorization.

26663345412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201995059 (or 201995057 counting only the distinct ones).

The product of its digits is 622080, while the sum is 42.

The spelling of 26663345412 in words is "twenty-six billion, six hundred sixty-three million, three hundred forty-five thousand, four hundred twelve".