26343809490 has 16 divisors (see below), whose sum is σ = 63225142848. Its totient is φ = 7025015856.

The previous prime is 26343809449. The next prime is 26343809507. The reversal of 26343809490 is 9490834362.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439063462 + ... + 439063521.

It is an arithmetic number, because the mean of its divisors is an integer number (3951571428).

Almost surely, 2^26343809490 is an apocalyptic number.

26343809490 is an abundant number, since it is smaller than the sum of its proper divisors (36881333358).

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

26343809490 is a wasteful number, since it uses less digits than its factorization.

26343809490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878126993.

The product of its (nonzero) digits is 1119744, while the sum is 48.

The spelling of 26343809490 in words is "twenty-six billion, three hundred forty-three million, eight hundred nine thousand, four hundred ninety".