26452636640 has 48 divisors (see below), whose sum is σ = 62517410928. Its totient is φ = 10577150976.

The previous prime is 26452636601. The next prime is 26452636687. The reversal of 26452636640 is 4663625462.

It is a junction number, because it is equal to n+sod(n) for n = 26452636591 and 26452636600.

It is a congruent number.

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, 425804 + ... + 483956.

It is an arithmetic number, because the mean of its divisors is an integer number (1302446061).

Almost surely, 2^26452636640 is an apocalyptic number.

26452636640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26452636640 is an abundant number, since it is smaller than the sum of its proper divisors (36064774288).

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

26452636640 is a wasteful number, since it uses less digits than its factorization.

26452636640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61011 (or 61003 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 26452636640 in words is "twenty-six billion, four hundred fifty-two million, six hundred thirty-six thousand, six hundred forty".