26988801187 has 2 divisors, whose sum is σ = 26988801188. Its totient is φ = 26988801186.

The previous prime is 26988801179. The next prime is 26988801223. The reversal of 26988801187 is 78110888962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26988801187 - 2³ = 26988801179 is a prime.

It is a super-2 number, since 2×26988801187² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26988801127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13494400593 + 13494400594.

It is an arithmetic number, because the mean of its divisors is an integer number (13494400594).

Almost surely, 2^26988801187 is an apocalyptic number.

26988801187 is a deficient number, since it is larger than the sum of its proper divisors (1).

26988801187 is an equidigital number, since it uses as much as digits as its factorization.

26988801187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3096576, while the sum is 58.

The spelling of 26988801187 in words is "twenty-six billion, nine hundred eighty-eight million, eight hundred one thousand, one hundred eighty-seven".