3661948894136 has 32 divisors (see below), whose sum is σ = 7394425869600. Its totient is φ = 1690106033280.

The previous prime is 3661948894031. The next prime is 3661948894217. The reversal of 3661948894136 is 6314988491663.

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, 8486045 + ... + 8907123.

It is an arithmetic number, because the mean of its divisors is an integer number (231075808425).

Almost surely, 2^{3661948894136} is an apocalyptic number.

It is an amenable number.

3661948894136 is an abundant number, since it is smaller than the sum of its proper divisors (3732476975464).

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

3661948894136 is a wasteful number, since it uses less digits than its factorization.

3661948894136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504719 (or 504715 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 68.

The spelling of 3661948894136 in words is "three trillion, six hundred sixty-one billion, nine hundred forty-eight million, eight hundred ninety-four thousand, one hundred thirty-six".