26489877121 has 12 divisors (see below), whose sum is σ = 28119130452. Its totient is φ = 24950552544.

The previous prime is 26489877107. The next prime is 26489877137. The reversal of 26489877121 is 12177898462.

It can be written as a sum of positive squares in 2 ways, for example, as 22781676096 + 3708201025 = 150936^2 + 60895^2 .

It is a de Polignac number, because none of the positive numbers 2^k-26489877121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26489877151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149626 + ... + 274531.

It is an arithmetic number, because the mean of its divisors is an integer number (2343260871).

Almost surely, 2^26489877121 is an apocalyptic number.

It is an amenable number.

26489877121 is a deficient number, since it is larger than the sum of its proper divisors (1629253331).

26489877121 is a wasteful number, since it uses less digits than its factorization.

26489877121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424368 (or 424349 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 55.

The spelling of 26489877121 in words is "twenty-six billion, four hundred eighty-nine million, eight hundred seventy-seven thousand, one hundred twenty-one".