26990530560 has 832 divisors, whose sum is σ = 115748659200. Its totient is φ = 5828640768.

The previous prime is 26990530549. The next prime is 26990530583. The reversal of 26990530560 is 6503509962.

26990530560 is a `hidden beast` number, since 2 + 69 + 9 + 0 + 530 + 56 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73543497 + ... + 73543863.

Almost surely, 2^26990530560 is an apocalyptic number.

26990530560 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 26990530560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57874329600).

26990530560 is an abundant number, since it is smaller than the sum of its proper divisors (88758128640).

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

26990530560 is a wasteful number, since it uses less digits than its factorization.

26990530560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The spelling of 26990530560 in words is "twenty-six billion, nine hundred ninety million, five hundred thirty thousand, five hundred sixty".