190668269553 has 4 divisors (see below), whose sum is σ = 254224359408. Its totient is φ = 127112179700.

The previous prime is 190668269461. The next prime is 190668269581. The reversal of 190668269553 is 355962866091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 190668269553 - 2²² = 190664075249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190668265553) 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, 31778044923 + ... + 31778044928.

It is an arithmetic number, because the mean of its divisors is an integer number (63556089852).

Almost surely, 2^190668269553 is an apocalyptic number.

It is an amenable number.

190668269553 is a deficient number, since it is larger than the sum of its proper divisors (63556089855).

190668269553 is an equidigital number, since it uses as much as digits as its factorization.

190668269553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63556089854.

The product of its (nonzero) digits is 20995200, while the sum is 60.

The spelling of 190668269553 in words is "one hundred ninety billion, six hundred sixty-eight million, two hundred sixty-nine thousand, five hundred fifty-three".