3957886346240 has 44 divisors (see below), whose sum is σ = 9494289095196. Its totient is φ = 1583154536448.

The previous prime is 3957886346221. The next prime is 3957886346251. The reversal of 3957886346240 is 426436887593.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1687006127104 + 2270880219136 = 1298848^2 + 1506944^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386507219 + ... + 386517458.

Almost surely, 2^{3957886346240} is an apocalyptic number.

It is an amenable number.

3957886346240 is an abundant number, since it is smaller than the sum of its proper divisors (5536402748956).

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

3957886346240 is an equidigital number, since it uses as much as digits as its factorization.

3957886346240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773024702 (or 773024684 counting only the distinct ones).

The product of its (nonzero) digits is 209018880, while the sum is 65.

The spelling of 3957886346240 in words is "three trillion, nine hundred fifty-seven billion, eight hundred eighty-six million, three hundred forty-six thousand, two hundred forty".