26552794640 has 20 divisors (see below), whose sum is σ = 61735247724. Its totient is φ = 10621117824.

The previous prime is 26552794637. The next prime is 26552794651. The reversal of 26552794640 is 4649725562.

It can be written as a sum of positive squares in 2 ways, for example, as 7300677136 + 19252117504 = 85444^2 + 138752^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 165954887 + ... + 165955046.

Almost surely, 2^26552794640 is an apocalyptic number.

26552794640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26552794640 is an abundant number, since it is smaller than the sum of its proper divisors (35182453084).

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

26552794640 is a wasteful number, since it uses less digits than its factorization.

26552794640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331909946 (or 331909940 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 26552794640 in words is "twenty-six billion, five hundred fifty-two million, seven hundred ninety-four thousand, six hundred forty".