199661245627 has 8 divisors (see below), whose sum is σ = 200381862960. Its totient is φ = 198940735200.

The previous prime is 199661245613. The next prime is 199661245643. The reversal of 199661245627 is 726542166991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199661245627 is a prime.

It is a super-2 number, since 2×199661245627² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199661245327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7193877 + ... + 7221577.

It is an arithmetic number, because the mean of its divisors is an integer number (25047732870).

Almost surely, 2^199661245627 is an apocalyptic number.

199661245627 is a deficient number, since it is larger than the sum of its proper divisors (720617333).

199661245627 is a wasteful number, since it uses less digits than its factorization.

199661245627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53453.

The product of its digits is 9797760, while the sum is 58.

The spelling of 199661245627 in words is "one hundred ninety-nine billion, six hundred sixty-one million, two hundred forty-five thousand, six hundred twenty-seven".