26211798722 has 18 divisors (see below), whose sum is σ = 39565495443. Its totient is φ = 13023816484.

The previous prime is 26211798677. The next prime is 26211798737. The reversal of 26211798722 is 22789711262.

It can be written as a sum of positive squares in only one way, i.e., 13105899361 + 13105899361 = 114481^2 + 114481^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=114481.

It is a super-3 number, since 3×26211798722³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 54721679 + ... + 54722157.

Almost surely, 2^26211798722 is an apocalyptic number.

26211798722 is a deficient number, since it is larger than the sum of its proper divisors (13353696721).

26211798722 is an frugal number, since it uses more digits than its factorization.

26211798722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438 (or 720 counting only the distinct ones).

The product of its digits is 338688, while the sum is 47.

The spelling of 26211798722 in words is "twenty-six billion, two hundred eleven million, seven hundred ninety-eight thousand, seven hundred twenty-two".