172649540188 has 24 divisors (see below), whose sum is σ = 306262645920. Its totient is φ = 85152283200.

The previous prime is 172649540153. The next prime is 172649540201. The reversal of 172649540188 is 881045946271.

172649540188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685656 + ... + 903007.

It is an arithmetic number, because the mean of its divisors is an integer number (12760943580).

Almost surely, 2^172649540188 is an apocalyptic number.

It is an amenable number.

172649540188 is a deficient number, since it is larger than the sum of its proper divisors (133613105732).

172649540188 is a wasteful number, since it uses less digits than its factorization.

172649540188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589037 (or 1589035 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 172649540188 in words is "one hundred seventy-two billion, six hundred forty-nine million, five hundred forty thousand, one hundred eighty-eight".