172374555403 has 2 divisors, whose sum is σ = 172374555404. Its totient is φ = 172374555402.

The previous prime is 172374555391. The next prime is 172374555421. The reversal of 172374555403 is 304555473271.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172374555403 is a prime.

It is not a weakly prime, because it can be changed into another prime (172374555433) by changing a digit.

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, 86187277701 + 86187277702.

It is an arithmetic number, because the mean of its divisors is an integer number (86187277702).

Almost surely, 2^172374555403 is an apocalyptic number.

172374555403 is a deficient number, since it is larger than the sum of its proper divisors (1).

172374555403 is an equidigital number, since it uses as much as digits as its factorization.

172374555403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764000, while the sum is 46.

The spelling of 172374555403 in words is "one hundred seventy-two billion, three hundred seventy-four million, five hundred fifty-five thousand, four hundred three".