7673397817661 has 8 divisors (see below), whose sum is σ = 7717755802848. Its totient is φ = 7629061410000.

The previous prime is 7673397817559. The next prime is 7673397817669. The reversal of 7673397817661 is 1667187933767.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7673397817661 - 2¹⁸ = 7673397555517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7673397817669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4680815 + ... + 6103836.

It is an arithmetic number, because the mean of its divisors is an integer number (964719475356).

Almost surely, 2^{7673397817661} is an apocalyptic number.

It is an amenable number.

7673397817661 is a deficient number, since it is larger than the sum of its proper divisors (44357985187).

7673397817661 is a wasteful number, since it uses less digits than its factorization.

7673397817661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10788763.

The product of its digits is 336063168, while the sum is 71.

The spelling of 7673397817661 in words is "seven trillion, six hundred seventy-three billion, three hundred ninety-seven million, eight hundred seventeen thousand, six hundred sixty-one".