199272440623 has 2 divisors, whose sum is σ = 199272440624. Its totient is φ = 199272440622.

The previous prime is 199272440621. The next prime is 199272440677. The reversal of 199272440623 is 326044272991.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (326044272991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199272440623 - 2¹ = 199272440621 is a prime.

Together with 199272440621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199272440621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99636220311 + 99636220312.

It is an arithmetic number, because the mean of its divisors is an integer number (99636220312).

Almost surely, 2^199272440623 is an apocalyptic number.

199272440623 is a deficient number, since it is larger than the sum of its proper divisors (1).

199272440623 is an equidigital number, since it uses as much as digits as its factorization.

199272440623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 199272440623 in words is "one hundred ninety-nine billion, two hundred seventy-two million, four hundred forty thousand, six hundred twenty-three".