815711440480 has 48 divisors (see below), whose sum is σ = 1931245046640. Its totient is φ = 325585864192.

The previous prime is 815711440441. The next prime is 815711440483. The reversal of 815711440480 is 84044117518.

815711440480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815711440483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5383735 + ... + 5533174.

It is an arithmetic number, because the mean of its divisors is an integer number (40234271805).

Almost surely, 2^815711440480 is an apocalyptic number.

815711440480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

815711440480 is an abundant number, since it is smaller than the sum of its proper divisors (1115533606160).

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

815711440480 is a wasteful number, since it uses less digits than its factorization.

815711440480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10917391 (or 10917383 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 43.

Adding to 815711440480 its reverse (84044117518), we get a palindrome (899755557998).

The spelling of 815711440480 in words is "eight hundred fifteen billion, seven hundred eleven million, four hundred forty thousand, four hundred eighty".