26111001640 has 16 divisors (see below), whose sum is σ = 58749753780. Its totient is φ = 10444400640.

The previous prime is 26111001619. The next prime is 26111001703. The reversal of 26111001640 is 4610011162.

It can be written as a sum of positive squares in 2 ways, for example, as 25433232484 + 677769156 = 159478^2 + 26034^2 .

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, 326387481 + ... + 326387560.

Almost surely, 2^26111001640 is an apocalyptic number.

26111001640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26111001640 is an abundant number, since it is smaller than the sum of its proper divisors (32638752140).

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

26111001640 is a wasteful number, since it uses less digits than its factorization.

26111001640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652775052 (or 652775048 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 26111001640 in words is "twenty-six billion, one hundred eleven million, one thousand, six hundred forty".