26540040002650 has 24 divisors (see below), whose sum is σ = 50698649392380. Its totient is φ = 10329096648960.

The previous prime is 26540040002647. The next prime is 26540040002681. The reversal of 26540040002650 is 5620004004562.

It can be written as a sum of positive squares in 6 ways, for example, as 10292425328761 + 16247614673889 = 3208181^2 + 4030833^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7172981935 + ... + 7172985634.

Almost surely, 2^{26540040002650} is an apocalyptic number.

26540040002650 is a deficient number, since it is larger than the sum of its proper divisors (24158609389730).

26540040002650 is a wasteful number, since it uses less digits than its factorization.

26540040002650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14345967618 (or 14345967613 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 26540040002650 in words is "twenty-six trillion, five hundred forty billion, forty million, two thousand, six hundred fifty".