26646704320 has 28 divisors (see below), whose sum is σ = 63452465424. Its totient is φ = 10658681600.

The previous prime is 26646704269. The next prime is 26646704323. The reversal of 26646704320 is 2340764662.

It is a super-2 number, since 2×26646704320² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (26646704323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41635156 + ... + 41635795.

Almost surely, 2^26646704320 is an apocalyptic number.

26646704320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26646704320 is an abundant number, since it is smaller than the sum of its proper divisors (36805761104).

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

26646704320 is an equidigital number, since it uses as much as digits as its factorization.

26646704320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83270968 (or 83270958 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 40.

The spelling of 26646704320 in words is "twenty-six billion, six hundred forty-six million, seven hundred four thousand, three hundred twenty".