26664514560 has 528 divisors, whose sum is σ = 97638952320. Its totient is φ = 6715146240.

The previous prime is 26664514549. The next prime is 26664514567. The reversal of 26664514560 is 6541546662.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26664514567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147317670 + ... + 147317850.

Almost surely, 2^26664514560 is an apocalyptic number.

26664514560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26664514560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48819476160).

26664514560 is an abundant number, since it is smaller than the sum of its proper divisors (70974437760).

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

26664514560 is a wasteful number, since it uses less digits than its factorization.

26664514560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 26664514560 in words is "twenty-six billion, six hundred sixty-four million, five hundred fourteen thousand, five hundred sixty".