320935981890 has 64 divisors (see below), whose sum is σ = 823962875904. Its totient is φ = 79718227968.

The previous prime is 320935981841. The next prime is 320935981967. The reversal of 320935981890 is 98189539023.

320935981890 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 320935981890.

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, 3194274 + ... + 3293213.

It is an arithmetic number, because the mean of its divisors is an integer number (12874419936).

Almost surely, 2^320935981890 is an apocalyptic number.

320935981890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320935981890 is an abundant number, since it is smaller than the sum of its proper divisors (503026894014).

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

320935981890 is a wasteful number, since it uses less digits than its factorization.

320935981890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487611.

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 320935981890 in words is "three hundred twenty billion, nine hundred thirty-five million, nine hundred eighty-one thousand, eight hundred ninety".