67120565772 has 96 divisors (see below), whose sum is σ = 177435820800. Its totient is φ = 19602277632.

The previous prime is 67120565747. The next prime is 67120565773. The reversal of 67120565772 is 27756502176.

It is not an unprimeable number, because it can be changed into a prime (67120565773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141183 + ... + 392649.

It is an arithmetic number, because the mean of its divisors is an integer number (1848289800).

Almost surely, 2^67120565772 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 67120565772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88717910400).

67120565772 is an abundant number, since it is smaller than the sum of its proper divisors (110315255028).

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

67120565772 is a wasteful number, since it uses less digits than its factorization.

67120565772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251575 (or 251573 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 48.

The spelling of 67120565772 in words is "sixty-seven billion, one hundred twenty million, five hundred sixty-five thousand, seven hundred seventy-two".