172134784057 has 8 divisors (see below), whose sum is σ = 176809318400. Its totient is φ = 167461420464.

The previous prime is 172134784037. The next prime is 172134784099. The reversal of 172134784057 is 750487431271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172134784057 - 2¹¹ = 172134782009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172134784057.

It is not an unprimeable number, because it can be changed into a prime (172134784037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9544 + ... + 586822.

It is an arithmetic number, because the mean of its divisors is an integer number (22101164800).

Almost surely, 2^172134784057 is an apocalyptic number.

It is an amenable number.

172134784057 is a deficient number, since it is larger than the sum of its proper divisors (4674534343).

172134784057 is an equidigital number, since it uses as much as digits as its factorization.

172134784057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585375.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 172134784057 in words is "one hundred seventy-two billion, one hundred thirty-four million, seven hundred eighty-four thousand, fifty-seven".