172771628603 has 4 divisors (see below), whose sum is σ = 197453289840. Its totient is φ = 148089967368.

The previous prime is 172771628573. The next prime is 172771628629. The reversal of 172771628603 is 306826177271.

It is a happy number.

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

It is not a de Polignac number, because 172771628603 - 2⁶ = 172771628539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172771628663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12340830608 + ... + 12340830621.

It is an arithmetic number, because the mean of its divisors is an integer number (49363322460).

Almost surely, 2^172771628603 is an apocalyptic number.

172771628603 is a deficient number, since it is larger than the sum of its proper divisors (24681661237).

172771628603 is an equidigital number, since it uses as much as digits as its factorization.

172771628603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24681661236.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 172771628603 in words is "one hundred seventy-two billion, seven hundred seventy-one million, six hundred twenty-eight thousand, six hundred three".