201700168537 has 4 divisors (see below), whose sum is σ = 230514478336. Its totient is φ = 172885858740.

The previous prime is 201700168469. The next prime is 201700168541. The reversal of 201700168537 is 735861007102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-201700168537 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 201700168537.

It is not an unprimeable number, because it can be changed into a prime (201700168577) 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, 14407154889 + ... + 14407154902.

It is an arithmetic number, because the mean of its divisors is an integer number (57628619584).

Almost surely, 2^201700168537 is an apocalyptic number.

It is an amenable number.

201700168537 is a deficient number, since it is larger than the sum of its proper divisors (28814309799).

201700168537 is an equidigital number, since it uses as much as digits as its factorization.

201700168537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28814309798.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 201700168537 in words is "two hundred one billion, seven hundred million, one hundred sixty-eight thousand, five hundred thirty-seven".