200147969642 has 4 divisors (see below), whose sum is σ = 300221954466. Its totient is φ = 100073984820.

The previous prime is 200147969591. The next prime is 200147969647. The reversal of 200147969642 is 246969741002.

It is a Cunningham number, because it is equal to 447379²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 200147969641 + 1 = 447379^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (200147969647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50036992409 + ... + 50036992412.

Almost surely, 2^200147969642 is an apocalyptic number.

200147969642 is a deficient number, since it is larger than the sum of its proper divisors (100073984824).

200147969642 is a wasteful number, since it uses less digits than its factorization.

200147969642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100073984823.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 200147969642 in words is "two hundred billion, one hundred forty-seven million, nine hundred sixty-nine thousand, six hundred forty-two".