172460450642 has 4 divisors (see below), whose sum is σ = 258690675966. Its totient is φ = 86230225320.

The previous prime is 172460450611. The next prime is 172460450653. The reversal of 172460450642 is 246054064271.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 148017942361 + 24442508281 = 384731^2 + 156341^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 172460450642.

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 as a sum of consecutive naturals, namely, 43115112659 + ... + 43115112662.

Almost surely, 2^172460450642 is an apocalyptic number.

172460450642 is a deficient number, since it is larger than the sum of its proper divisors (86230225324).

172460450642 is an equidigital number, since it uses as much as digits as its factorization.

172460450642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86230225323.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 172460450642 in words is "one hundred seventy-two billion, four hundred sixty million, four hundred fifty thousand, six hundred forty-two".