67775191964 has 12 divisors (see below), whose sum is σ = 118850134704. Its totient is φ = 33818010624.

The previous prime is 67775191961. The next prime is 67775191969. The reversal of 67775191964 is 46919157776.

It is a junction number, because it is equal to n+sod(n) for n = 67775191897 and 67775191906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67775191961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17394149 + ... + 17398044.

It is an arithmetic number, because the mean of its divisors is an integer number (9904177892).

Almost surely, 2^67775191964 is an apocalyptic number.

It is an amenable number.

67775191964 is a deficient number, since it is larger than the sum of its proper divisors (51074942740).

67775191964 is a wasteful number, since it uses less digits than its factorization.

67775191964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34792684 (or 34792682 counting only the distinct ones).

The product of its digits is 20003760, while the sum is 62.

The spelling of 67775191964 in words is "sixty-seven billion, seven hundred seventy-five million, one hundred ninety-one thousand, nine hundred sixty-four".