3661651902442 has 32 divisors (see below), whose sum is σ = 5633479664640. Its totient is φ = 1784176917120.

The previous prime is 3661651902437. The next prime is 3661651902451. The reversal of 3661651902442 is 2442091561663.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20711263 + ... + 20887309.

It is an arithmetic number, because the mean of its divisors is an integer number (176046239520).

Almost surely, 2^{3661651902442} is an apocalyptic number.

3661651902442 is a deficient number, since it is larger than the sum of its proper divisors (1971827762198).

3661651902442 is a wasteful number, since it uses less digits than its factorization.

3661651902442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177046.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 3661651902442 in words is "three trillion, six hundred sixty-one billion, six hundred fifty-one million, nine hundred two thousand, four hundred forty-two".