67422657792 has 432 divisors, whose sum is σ = 221559069312. Its totient is φ = 18109808640.

The previous prime is 67422657761. The next prime is 67422657821. The reversal of 67422657792 is 29775622476.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52797058 + ... + 52798334.

It is an arithmetic number, because the mean of its divisors is an integer number (512868216).

Almost surely, 2^67422657792 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 67422657792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110779534656).

67422657792 is an abundant number, since it is smaller than the sum of its proper divisors (154136411520).

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

67422657792 is a wasteful number, since it uses less digits than its factorization.

67422657792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1373 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 57.

The spelling of 67422657792 in words is "sixty-seven billion, four hundred twenty-two million, six hundred fifty-seven thousand, seven hundred ninety-two".