67391364335661 has 12 divisors (see below), whose sum is σ = 97562817900288. Its totient is φ = 44826159570504.

The previous prime is 67391364335591. The next prime is 67391364335671. The reversal of 67391364335661 is 16653346319376.

67391364335661 is a `hidden beast` number, since 6 + 7 + 3 + 9 + 1 + 3 + 64 + 3 + 3 + 566 + 1 = 666.

It is not a de Polignac number, because 67391364335661 - 2⁴¹ = 65192341080109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67391364335671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8451383565 + ... + 8451391538.

It is an arithmetic number, because the mean of its divisors is an integer number (8130234825024).

Almost surely, 2^{67391364335661} is an apocalyptic number.

It is an amenable number.

67391364335661 is a deficient number, since it is larger than the sum of its proper divisors (30171453564627).

67391364335661 is a wasteful number, since it uses less digits than its factorization.

67391364335661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16902775552 (or 16902775549 counting only the distinct ones).

The product of its digits is 132269760, while the sum is 63.

The spelling of 67391364335661 in words is "sixty-seven trillion, three hundred ninety-one billion, three hundred sixty-four million, three hundred thirty-five thousand, six hundred sixty-one".