67642895232 has 384 divisors, whose sum is σ = 222259917600. Its totient is φ = 20487582720.

The previous prime is 67642895231. The next prime is 67642895261. The reversal of 67642895232 is 23259824676.

67642895232 is a `hidden beast` number, since 6 + 76 + 42 + 8 + 9 + 523 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×67642895232² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67642895231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33871258 + ... + 33873254.

Almost surely, 2^67642895232 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 67642895232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111129958800).

67642895232 is an abundant number, since it is smaller than the sum of its proper divisors (154617022368).

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

67642895232 is an equidigital number, since it uses as much as digits as its factorization.

67642895232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 2013 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 67642895232 in words is "sixty-seven billion, six hundred forty-two million, eight hundred ninety-five thousand, two hundred thirty-two".