190995656547 has 16 divisors (see below), whose sum is σ = 258478553600. Its totient is φ = 125421845472.

The previous prime is 190995656543. The next prime is 190995656569. The reversal of 190995656547 is 745656599091.

It is not a de Polignac number, because 190995656547 - 2² = 190995656543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190995656543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6155829 + ... + 6186777.

It is an arithmetic number, because the mean of its divisors is an integer number (16154909600).

Almost surely, 2^190995656547 is an apocalyptic number.

190995656547 is a deficient number, since it is larger than the sum of its proper divisors (67482897053).

190995656547 is a wasteful number, since it uses less digits than its factorization.

190995656547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61722.

The product of its (nonzero) digits is 91854000, while the sum is 66.

The spelling of 190995656547 in words is "one hundred ninety billion, nine hundred ninety-five million, six hundred fifty-six thousand, five hundred forty-seven".