6640346834336 has 48 divisors (see below), whose sum is σ = 13340957914368. Its totient is φ = 3252365625600.

The previous prime is 6640346834333. The next prime is 6640346834339. The reversal of 6640346834336 is 6334386430466.

It is an interprime number because it is at equal distance from previous prime (6640346834333) and next prime (6640346834339).

It is a super-2 number, since 2×6640346834336² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6640346834333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2032280 + ... + 4172631.

It is an arithmetic number, because the mean of its divisors is an integer number (277936623216).

Almost surely, 2^{6640346834336} is an apocalyptic number.

It is an amenable number.

6640346834336 is an abundant number, since it is smaller than the sum of its proper divisors (6700611080032).

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

6640346834336 is a wasteful number, since it uses less digits than its factorization.

6640346834336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205605 (or 6205597 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 56.

The spelling of 6640346834336 in words is "six trillion, six hundred forty billion, three hundred forty-six million, eight hundred thirty-four thousand, three hundred thirty-six".