818652660540 has 384 divisors, whose sum is σ = 2784925753344. Its totient is φ = 176961024000.

The previous prime is 818652660517. The next prime is 818652660541. The reversal of 818652660540 is 45066256818.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818652660541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 163043230 + ... + 163048250.

It is an arithmetic number, because the mean of its divisors is an integer number (7252410816).

Almost surely, 2^818652660540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818652660540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392462876672).

818652660540 is an abundant number, since it is smaller than the sum of its proper divisors (1966273092804).

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

818652660540 is a wasteful number, since it uses less digits than its factorization.

818652660540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5701 (or 5699 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 818652660540 in words is "eight hundred eighteen billion, six hundred fifty-two million, six hundred sixty thousand, five hundred forty".