190995656515 has 4 divisors (see below), whose sum is σ = 229194787824. Its totient is φ = 152796525208.

The previous prime is 190995656513. The next prime is 190995656519. The reversal of 190995656515 is 515656599091.

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

It is a cyclic number.

It is not a de Polignac number, because 190995656515 - 2¹ = 190995656513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190995656513) 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, 19099565647 + ... + 19099565656.

It is an arithmetic number, because the mean of its divisors is an integer number (57298696956).

Almost surely, 2^190995656515 is an apocalyptic number.

190995656515 is a deficient number, since it is larger than the sum of its proper divisors (38199131309).

190995656515 is an equidigital number, since it uses as much as digits as its factorization.

190995656515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38199131308.

The product of its (nonzero) digits is 16402500, while the sum is 61.

The spelling of 190995656515 in words is "one hundred ninety billion, nine hundred ninety-five million, six hundred fifty-six thousand, five hundred fifteen".