67691468766 has 16 divisors (see below), whose sum is σ = 135723957264. Its totient is φ = 22506986304.

The previous prime is 67691468759. The next prime is 67691468771. The reversal of 67691468766 is 66786419676.

It is a happy number.

It is a super-3 number, since 3×67691468766³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67691468697 and 67691468706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14206575 + ... + 14211338.

It is an arithmetic number, because the mean of its divisors is an integer number (8482747329).

Almost surely, 2^67691468766 is an apocalyptic number.

67691468766 is an abundant number, since it is smaller than the sum of its proper divisors (68032488498).

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

67691468766 is a wasteful number, since it uses less digits than its factorization.

67691468766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28418315.

The product of its digits is 109734912, while the sum is 66.

The spelling of 67691468766 in words is "sixty-seven billion, six hundred ninety-one million, four hundred sixty-eight thousand, seven hundred sixty-six".