3661250490816 has 56 divisors (see below), whose sum is σ = 9948871003920. Its totient is φ = 1187432589312.

The previous prime is 3661250490803. The next prime is 3661250490817. The reversal of 3661250490816 is 6180940521663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661250490817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257682261 + ... + 257696468.

Almost surely, 2^{3661250490816} is an apocalyptic number.

It is an amenable number.

3661250490816 is an abundant number, since it is smaller than the sum of its proper divisors (6287620513104).

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

3661250490816 is a wasteful number, since it uses less digits than its factorization.

3661250490816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515378781 (or 515378771 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 3661250490816 in words is "three trillion, six hundred sixty-one billion, two hundred fifty million, four hundred ninety thousand, eight hundred sixteen".