172249769340 has 72 divisors (see below), whose sum is σ = 569990152368. Its totient is φ = 41757519360.

The previous prime is 172249769339. The next prime is 172249769357. The reversal of 172249769340 is 43967942271.

172249769340 is a `hidden beast` number, since 1 + 7 + 22 + 497 + 6 + 93 + 40 = 666.

172249769340 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 23 ways as a sum of consecutive naturals, for example, 43495437 + ... + 43499396.

It is an arithmetic number, because the mean of its divisors is an integer number (7916529894).

Almost surely, 2^172249769340 is an apocalyptic number.

172249769340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172249769340 is an abundant number, since it is smaller than the sum of its proper divisors (397740383028).

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

172249769340 is a wasteful number, since it uses less digits than its factorization.

172249769340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86994859 (or 86994854 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 172249769340 in words is "one hundred seventy-two billion, two hundred forty-nine million, seven hundred sixty-nine thousand, three hundred forty".