321020414640 has 60 divisors (see below), whose sum is σ = 1078093561584. Its totient is φ = 85605443712.

The previous prime is 321020414633. The next prime is 321020414641. The reversal of 321020414640 is 46414020123.

It is a happy number.

321020414640 is a `hidden beast` number, since 3 + 2 + 1 + 0 + 2 + 0 + 4 + 14 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (321020414641) 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, 222930124 + ... + 222931563.

Almost surely, 2^321020414640 is an apocalyptic number.

321020414640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321020414640 is an abundant number, since it is smaller than the sum of its proper divisors (757073146944).

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

321020414640 is a wasteful number, since it uses less digits than its factorization.

321020414640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445861706 (or 445861697 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 321020414640 its reverse (46414020123), we get a palindrome (367434434763).

The spelling of 321020414640 in words is "three hundred twenty-one billion, twenty million, four hundred fourteen thousand, six hundred forty".