26880893447 has 4 divisors (see below), whose sum is σ = 26947928496. Its totient is φ = 26813858400.

The previous prime is 26880893401. The next prime is 26880893453. The reversal of 26880893447 is 74439808862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26880893447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26880893747) 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, 33516923 + ... + 33517724.

It is an arithmetic number, because the mean of its divisors is an integer number (6736982124).

Almost surely, 2^26880893447 is an apocalyptic number.

26880893447 is a deficient number, since it is larger than the sum of its proper divisors (67035049).

26880893447 is an equidigital number, since it uses as much as digits as its factorization.

26880893447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67035048.

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 26880893447 in words is "twenty-six billion, eight hundred eighty million, eight hundred ninety-three thousand, four hundred forty-seven".