201346606543451 has 4 divisors (see below), whose sum is σ = 203895297765600. Its totient is φ = 198797915321304.

The previous prime is 201346606543441. The next prime is 201346606543499. The reversal of 201346606543451 is 154345606643102.

It is a happy number.

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 201346606543451 - 2¹⁸ = 201346606281307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201346606543451.

It is not an unprimeable number, because it can be changed into a prime (201346606543441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274345610956 + ... + 1274345611113.

It is an arithmetic number, because the mean of its divisors is an integer number (50973824441400).

Almost surely, 2^{201346606543451} is an apocalyptic number.

201346606543451 is a deficient number, since it is larger than the sum of its proper divisors (2548691222149).

201346606543451 is an equidigital number, since it uses as much as digits as its factorization.

201346606543451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548691222148.

The product of its (nonzero) digits is 6220800, while the sum is 50.

The spelling of 201346606543451 in words is "two hundred one trillion, three hundred forty-six billion, six hundred six million, five hundred forty-three thousand, four hundred fifty-one".