26991222254 has 8 divisors (see below), whose sum is σ = 41474317248. Its totient is φ = 13166449840.

The previous prime is 26991222211. The next prime is 26991222257. The reversal of 26991222254 is 45222219962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26991222257) 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, 164580542 + ... + 164580705.

It is an arithmetic number, because the mean of its divisors is an integer number (5184289656).

Almost surely, 2^26991222254 is an apocalyptic number.

26991222254 is a deficient number, since it is larger than the sum of its proper divisors (14483094994).

26991222254 is a wasteful number, since it uses less digits than its factorization.

26991222254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329161290.

The product of its digits is 311040, while the sum is 44.

The spelling of 26991222254 in words is "twenty-six billion, nine hundred ninety-one million, two hundred twenty-two thousand, two hundred fifty-four".