67172757072 has 40 divisors (see below), whose sum is σ = 179513406240. Its totient is φ = 21618817920.

The previous prime is 67172757049. The next prime is 67172757097. The reversal of 67172757072 is 27075727176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24126754 + ... + 24129537.

It is an arithmetic number, because the mean of its divisors is an integer number (4487835156).

Almost surely, 2^67172757072 is an apocalyptic number.

It is an amenable number.

67172757072 is an abundant number, since it is smaller than the sum of its proper divisors (112340649168).

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

67172757072 is a wasteful number, since it uses less digits than its factorization.

67172757072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48256331 (or 48256325 counting only the distinct ones).

The product of its (nonzero) digits is 2016840, while the sum is 51.

The spelling of 67172757072 in words is "sixty-seven billion, one hundred seventy-two million, seven hundred fifty-seven thousand, seventy-two".