190421231055503 has 16 divisors (see below), whose sum is σ = 224981018169600. Its totient is φ = 157778895810816.

The previous prime is 190421231055493. The next prime is 190421231055521. The reversal of 190421231055503 is 305550132124091.

It is not a de Polignac number, because 190421231055503 - 2⁴ = 190421231055487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190421231055533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3260943353 + ... + 3261001746.

It is an arithmetic number, because the mean of its divisors is an integer number (14061313635600).

Almost surely, 2^{190421231055503} is an apocalyptic number.

190421231055503 is a deficient number, since it is larger than the sum of its proper divisors (34559787114097).

190421231055503 is an equidigital number, since it uses as much as digits as its factorization.

190421231055503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521945246.

The product of its (nonzero) digits is 162000, while the sum is 41.

Adding to 190421231055503 its reverse (305550132124091), we get a palindrome (495971363179594).

The spelling of 190421231055503 in words is "one hundred ninety trillion, four hundred twenty-one billion, two hundred thirty-one million, fifty-five thousand, five hundred three".