67344778332 has 72 divisors (see below), whose sum is σ = 183811649840. Its totient is φ = 20666741760.

The previous prime is 67344778309. The next prime is 67344778349. The reversal of 67344778332 is 23387744376.

It is a happy number.

67344778332 is a `hidden beast` number, since 67 + 3 + 4 + 477 + 83 + 32 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12469 + ... + 367212.

Almost surely, 2^67344778332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67344778332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91905824920).

67344778332 is an abundant number, since it is smaller than the sum of its proper divisors (116466871508).

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

67344778332 is a wasteful number, since it uses less digits than its factorization.

67344778332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380083 (or 380078 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 54.

The spelling of 67344778332 in words is "sixty-seven billion, three hundred forty-four million, seven hundred seventy-eight thousand, three hundred thirty-two".