172211075880 has 32 divisors (see below), whose sum is σ = 516633228000. Its totient is φ = 45922953536.

The previous prime is 172211075801. The next prime is 172211075887. The reversal of 172211075880 is 88570112271.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (172211075887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717546030 + ... + 717546269.

It is an arithmetic number, because the mean of its divisors is an integer number (16144788375).

Almost surely, 2^172211075880 is an apocalyptic number.

172211075880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172211075880 is an abundant number, since it is smaller than the sum of its proper divisors (344422152120).

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

172211075880 is a wasteful number, since it uses less digits than its factorization.

172211075880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435092313 (or 1435092309 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 42.

The spelling of 172211075880 in words is "one hundred seventy-two billion, two hundred eleven million, seventy-five thousand, eight hundred eighty".