326407777860 has 96 divisors (see below), whose sum is σ = 922749190272. Its totient is φ = 86203745280.

The previous prime is 326407777849. The next prime is 326407777939. The reversal of 326407777860 is 68777704623.

It is a self number, because there is not a number n which added to its sum of digits gives 326407777860.

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, 36210714 + ... + 36219726.

It is an arithmetic number, because the mean of its divisors is an integer number (9611970732).

Almost surely, 2^326407777860 is an apocalyptic number.

326407777860 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 326407777860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461374595136).

326407777860 is an abundant number, since it is smaller than the sum of its proper divisors (596341412412).

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

326407777860 is a wasteful number, since it uses less digits than its factorization.

326407777860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14773 (or 14771 counting only the distinct ones).

The product of its (nonzero) digits is 16595712, while the sum is 57.

The spelling of 326407777860 in words is "three hundred twenty-six billion, four hundred seven million, seven hundred seventy-seven thousand, eight hundred sixty".