326991848240 has 80 divisors (see below), whose sum is σ = 814751656128. Its totient is φ = 121728549888.

The previous prime is 326991848213. The next prime is 326991848243. The reversal of 326991848240 is 42848199623.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×326991848240² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (326991848243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2333447 + ... + 2469606.

Almost surely, 2^326991848240 is an apocalyptic number.

It is an amenable number.

326991848240 is an abundant number, since it is smaller than the sum of its proper divisors (487759807888).

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

326991848240 is a wasteful number, since it uses less digits than its factorization.

326991848240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803126 (or 4803120 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 326991848240 in words is "three hundred twenty-six billion, nine hundred ninety-one million, eight hundred forty-eight thousand, two hundred forty".