190085706721 has 16 divisors (see below), whose sum is σ = 201782320128. Its totient is φ = 178749806400.

The previous prime is 190085706719. The next prime is 190085706749. The reversal of 190085706721 is 127607580091.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 190085706721 - 2¹ = 190085706719 is a prime.

It is a super-2 number, since 2×190085706721² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190085796721) 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, 779436 + ... + 993826.

It is an arithmetic number, because the mean of its divisors is an integer number (12611395008).

Almost surely, 2^190085706721 is an apocalyptic number.

It is an amenable number.

190085706721 is a deficient number, since it is larger than the sum of its proper divisors (11696613407).

190085706721 is a wasteful number, since it uses less digits than its factorization.

190085706721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215232.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 190085706721 in words is "one hundred ninety billion, eighty-five million, seven hundred six thousand, seven hundred twenty-one".