817540411380 has 96 divisors (see below), whose sum is σ = 2853959270400. Its totient is φ = 169878526080.

The previous prime is 817540411379. The next prime is 817540411397. The reversal of 817540411380 is 83114045718.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88473780 + ... + 88483019.

It is an arithmetic number, because the mean of its divisors is an integer number (29728742400).

Almost surely, 2^817540411380 is an apocalyptic number.

It is an amenable number.

817540411380 is an abundant number, since it is smaller than the sum of its proper divisors (2036418859020).

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

817540411380 is a wasteful number, since it uses less digits than its factorization.

817540411380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176956829 (or 176956827 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 817540411380 in words is "eight hundred seventeen billion, five hundred forty million, four hundred eleven thousand, three hundred eighty".