172772074672 has 120 divisors (see below), whose sum is σ = 375201253440. Its totient is φ = 76842132480.

The previous prime is 172772074633. The next prime is 172772074697. The reversal of 172772074672 is 276470277271.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41026647 + ... + 41030857.

It is an arithmetic number, because the mean of its divisors is an integer number (3126677112).

Almost surely, 2^172772074672 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 172772074672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187600626720).

172772074672 is an abundant number, since it is smaller than the sum of its proper divisors (202429178768).

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

172772074672 is a wasteful number, since it uses less digits than its factorization.

172772074672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739 (or 4716 counting only the distinct ones).

The product of its (nonzero) digits is 3226944, while the sum is 52.

The spelling of 172772074672 in words is "one hundred seventy-two billion, seven hundred seventy-two million, seventy-four thousand, six hundred seventy-two".