199527715531 has 4 divisors (see below), whose sum is σ = 211264639992. Its totient is φ = 187790791072.

The previous prime is 199527715529. The next prime is 199527715559. The reversal of 199527715531 is 135517725991.

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 199527715531 - 2¹ = 199527715529 is a prime.

It is a super-2 number, since 2×199527715531² (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 (199527715501) 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, 5868462205 + ... + 5868462238.

It is an arithmetic number, because the mean of its divisors is an integer number (52816159998).

Almost surely, 2^199527715531 is an apocalyptic number.

199527715531 is a deficient number, since it is larger than the sum of its proper divisors (11736924461).

199527715531 is a wasteful number, since it uses less digits than its factorization.

199527715531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11736924460.

The product of its digits is 2976750, while the sum is 55.

The spelling of 199527715531 in words is "one hundred ninety-nine billion, five hundred twenty-seven million, seven hundred fifteen thousand, five hundred thirty-one".