26881428291 has 8 divisors (see below), whose sum is σ = 35849502480. Its totient is φ = 17917153152.

The previous prime is 26881428281. The next prime is 26881428337. The reversal of 26881428291 is 19282418862.

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

It is not a de Polignac number, because 26881428291 - 2¹³ = 26881420099 is a prime.

It is a super-2 number, since 2×26881428291² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26881428251) 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, 933210 + ... + 961583.

It is an arithmetic number, because the mean of its divisors is an integer number (4481187810).

Almost surely, 2^26881428291 is an apocalyptic number.

26881428291 is a deficient number, since it is larger than the sum of its proper divisors (8968074189).

26881428291 is a wasteful number, since it uses less digits than its factorization.

26881428291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899525.

The product of its digits is 884736, while the sum is 51.

The spelling of 26881428291 in words is "twenty-six billion, eight hundred eighty-one million, four hundred twenty-eight thousand, two hundred ninety-one".