26550991480 has 64 divisors (see below), whose sum is σ = 64381917600. Its totient is φ = 9796308480.

The previous prime is 26550991451. The next prime is 26550991487. The reversal of 26550991480 is 8419905562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26550991487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 725215 + ... + 760945.

Almost surely, 2^26550991480 is an apocalyptic number.

26550991480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26550991480 is an abundant number, since it is smaller than the sum of its proper divisors (37830926120).

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

26550991480 is a wasteful number, since it uses less digits than its factorization.

26550991480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37184 (or 37180 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 26550991480 in words is "twenty-six billion, five hundred fifty million, nine hundred ninety-one thousand, four hundred eighty".