26626254137540 has 12 divisors (see below), whose sum is σ = 55915133688876. Its totient is φ = 10650501655008.

The previous prime is 26626254137507. The next prime is 26626254137599. The reversal of 26626254137540 is 4573145262662.

It can be written as a sum of positive squares in 2 ways, for example, as 12088917055744 + 14537337081796 = 3476912^2 + 3812786^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665656353419 + ... + 665656353458.

It is an arithmetic number, because the mean of its divisors is an integer number (4659594474073).

Almost surely, 2^{26626254137540} is an apocalyptic number.

26626254137540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26626254137540 is an abundant number, since it is smaller than the sum of its proper divisors (29288879551336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26626254137540 is a wasteful number, since it uses less digits than its factorization.

26626254137540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331312706886 (or 1331312706884 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 53.

The spelling of 26626254137540 in words is "twenty-six trillion, six hundred twenty-six billion, two hundred fifty-four million, one hundred thirty-seven thousand, five hundred forty".