172221777032 has 16 divisors (see below), whose sum is σ = 322920752640. Its totient is φ = 86109576336.

The previous prime is 172221776953. The next prime is 172221777041. The reversal of 172221777032 is 230777122271.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606953 + ... + 844295.

It is an arithmetic number, because the mean of its divisors is an integer number (20182547040).

Almost surely, 2^172221777032 is an apocalyptic number.

It is an amenable number.

172221777032 is a deficient number, since it is larger than the sum of its proper divisors (150698975608).

172221777032 is a wasteful number, since it uses less digits than its factorization.

172221777032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328052 (or 328048 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 41.

The spelling of 172221777032 in words is "one hundred seventy-two billion, two hundred twenty-one million, seven hundred seventy-seven thousand, thirty-two".