67672643934 has 256 divisors, whose sum is σ = 171048960000. Its totient is φ = 17798901120.

The previous prime is 67672643921. The next prime is 67672643953. The reversal of 67672643934 is 43934627676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 146160987 + ... + 146161449.

It is an arithmetic number, because the mean of its divisors is an integer number (668160000).

Almost surely, 2^67672643934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67672643934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85524480000).

67672643934 is an abundant number, since it is smaller than the sum of its proper divisors (103376316066).

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

67672643934 is a wasteful number, since it uses less digits than its factorization.

67672643934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 614 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 57.

The spelling of 67672643934 in words is "sixty-seven billion, six hundred seventy-two million, six hundred forty-three thousand, nine hundred thirty-four".