3959351749556 has 24 divisors (see below), whose sum is σ = 7981055502336. Its totient is φ = 1683503892000.

The previous prime is 3959351749519. The next prime is 3959351749597. The reversal of 3959351749556 is 6559471539593.

It is a self number, because there is not a number n which added to its sum of digits gives 3959351749556.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556710695 + ... + 556717806.

It is an arithmetic number, because the mean of its divisors is an integer number (332543979264).

Almost surely, 2^{3959351749556} is an apocalyptic number.

It is an amenable number.

3959351749556 is an abundant number, since it is smaller than the sum of its proper divisors (4021703752780).

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

3959351749556 is a wasteful number, since it uses less digits than its factorization.

3959351749556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113428639 (or 1113428637 counting only the distinct ones).

The product of its digits is 688905000, while the sum is 71.

The spelling of 3959351749556 in words is "three trillion, nine hundred fifty-nine billion, three hundred fifty-one million, seven hundred forty-nine thousand, five hundred fifty-six".