3679561669618 has 4 divisors (see below), whose sum is σ = 5519342504430. Its totient is φ = 1839780834808.

The previous prime is 3679561669591. The next prime is 3679561669621. The reversal of 3679561669618 is 8169661659763.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3588323238369 + 91238431249 = 1894287^2 + 302057^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919890417403 + ... + 919890417406.

Almost surely, 2^{3679561669618} is an apocalyptic number.

3679561669618 is a deficient number, since it is larger than the sum of its proper divisors (1839780834812).

3679561669618 is a wasteful number, since it uses less digits than its factorization.

3679561669618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839780834811.

The product of its digits is 529079040, while the sum is 73.

The spelling of 3679561669618 in words is "three trillion, six hundred seventy-nine billion, five hundred sixty-one million, six hundred sixty-nine thousand, six hundred eighteen".