10815799280 has 320 divisors, whose sum is σ = 30496048128. Its totient is φ = 3515719680.

The previous prime is 10815799261. The next prime is 10815799301. The reversal of 10815799280 is 8299751801.

Added to its reverse (8299751801) it gives a square (19115551081 = 138259²).

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, 78947372 + ... + 78947508.

Almost surely, 2^10815799280 is an apocalyptic number.

10815799280 is a gapful number since it is divisible by the number (10) 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 10815799280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15248024064).

10815799280 is an abundant number, since it is smaller than the sum of its proper divisors (19680248848).

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

10815799280 is a wasteful number, since it uses less digits than its factorization.

10815799280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 50.

Adding to 10815799280 its reverse (8299751801), we get a square (19115551081 = 138259²).

The spelling of 10815799280 in words is "ten billion, eight hundred fifteen million, seven hundred ninety-nine thousand, two hundred eighty".