172178769140 has 48 divisors (see below), whose sum is σ = 414958118400. Its totient is φ = 58785710592.

The previous prime is 172178769137. The next prime is 172178769167. The reversal of 172178769140 is 41967871271.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2539445 + ... + 2606364.

It is an arithmetic number, because the mean of its divisors is an integer number (8644960800).

Almost surely, 2^172178769140 is an apocalyptic number.

172178769140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172178769140 is an abundant number, since it is smaller than the sum of its proper divisors (242779349260).

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

172178769140 is a wasteful number, since it uses less digits than its factorization.

172178769140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146064 (or 5146062 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 53.

The spelling of 172178769140 in words is "one hundred seventy-two billion, one hundred seventy-eight million, seven hundred sixty-nine thousand, one hundred forty".