1642421452363 has 4 divisors (see below), whose sum is σ = 1695402789568. Its totient is φ = 1589440115160.

The previous prime is 1642421452307. The next prime is 1642421452367. The reversal of 1642421452363 is 3632541242461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1642421452363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1642421452367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26490668556 + ... + 26490668617.

It is an arithmetic number, because the mean of its divisors is an integer number (423850697392).

Almost surely, 2^{1642421452363} is an apocalyptic number.

1642421452363 is a deficient number, since it is larger than the sum of its proper divisors (52981337205).

1642421452363 is an equidigital number, since it uses as much as digits as its factorization.

1642421452363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52981337204.

The product of its digits is 829440, while the sum is 43.

The spelling of 1642421452363 in words is "one trillion, six hundred forty-two billion, four hundred twenty-one million, four hundred fifty-two thousand, three hundred sixty-three".