67745727552 has 112 divisors (see below), whose sum is σ = 188769386240. Its totient is φ = 21383004672.

The previous prime is 67745727529. The next prime is 67745727557. The reversal of 67745727552 is 25572754776.

It is a happy number.

67745727552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 67745727492 and 67745727501.

It is not an unprimeable number, because it can be changed into a prime (67745727557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11623263 + ... + 11629089.

Almost surely, 2^67745727552 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 67745727552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94384693120).

67745727552 is an abundant number, since it is smaller than the sum of its proper divisors (121023658688).

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

67745727552 is a wasteful number, since it uses less digits than its factorization.

67745727552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048 (or 9038 counting only the distinct ones).

The product of its digits is 28812000, while the sum is 57.

The spelling of 67745727552 in words is "sixty-seven billion, seven hundred forty-five million, seven hundred twenty-seven thousand, five hundred fifty-two".