3243631618464 has 72 divisors (see below), whose sum is σ = 8727270128640. Its totient is φ = 1054839498240.

The previous prime is 3243631618463. The next prime is 3243631618573. The reversal of 3243631618464 is 4648161363423.

It is a super-2 number, since 2×3243631618464² (a number of 26 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3243631618463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9888544 + ... + 10211295.

It is an arithmetic number, because the mean of its divisors is an integer number (121212085120).

Almost surely, 2^{3243631618464} is an apocalyptic number.

It is an amenable number.

3243631618464 is an abundant number, since it is smaller than the sum of its proper divisors (5483638510176).

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

3243631618464 is a wasteful number, since it uses less digits than its factorization.

3243631618464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20099934 (or 20099885 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 51.

The spelling of 3243631618464 in words is "three trillion, two hundred forty-three billion, six hundred thirty-one million, six hundred eighteen thousand, four hundred sixty-four".