26590914640 has 40 divisors (see below), whose sum is σ = 63818201088. Its totient is φ = 10293256320.

The previous prime is 26590914619. The next prime is 26590914643. The reversal of 26590914640 is 4641909562.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26590914643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5358592 + ... + 5363551.

Almost surely, 2^26590914640 is an apocalyptic number.

26590914640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26590914640 is an abundant number, since it is smaller than the sum of its proper divisors (37227286448).

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

26590914640 is a wasteful number, since it uses less digits than its factorization.

26590914640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10722187 (or 10722181 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 26590914640 in words is "twenty-six billion, five hundred ninety million, nine hundred fourteen thousand, six hundred forty".