642472274183 has 2 divisors, whose sum is σ = 642472274184. Its totient is φ = 642472274182.

The previous prime is 642472274177. The next prime is 642472274209. The reversal of 642472274183 is 381472274246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642472274183 - 2⁴ = 642472274167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642472274113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321236137091 + 321236137092.

It is an arithmetic number, because the mean of its divisors is an integer number (321236137092).

Almost surely, 2^642472274183 is an apocalyptic number.

642472274183 is a deficient number, since it is larger than the sum of its proper divisors (1).

642472274183 is an equidigital number, since it uses as much as digits as its factorization.

642472274183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3612672, while the sum is 50.

The spelling of 642472274183 in words is "six hundred forty-two billion, four hundred seventy-two million, two hundred seventy-four thousand, one hundred eighty-three".