326504788680 has 256 divisors, whose sum is σ = 1197035573760. Its totient is φ = 69543936000.

The previous prime is 326504788637. The next prime is 326504788681. The reversal of 326504788680 is 86887405623.

It is a happy number.

It is a super-2 number, since 2×326504788680² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 326504788680.

It is not an unprimeable number, because it can be changed into a prime (326504788681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1329090 + ... + 1555470.

It is an arithmetic number, because the mean of its divisors is an integer number (4675920210).

Almost surely, 2^326504788680 is an apocalyptic number.

326504788680 is a gapful number since it is divisible by the number (30) 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 326504788680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598517786880).

326504788680 is an abundant number, since it is smaller than the sum of its proper divisors (870530785080).

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

326504788680 is a wasteful number, since it uses less digits than its factorization.

326504788680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226520 (or 226516 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 57.

The spelling of 326504788680 in words is "three hundred twenty-six billion, five hundred four million, seven hundred eighty-eight thousand, six hundred eighty".