201972064943 has 16 divisors (see below), whose sum is σ = 223151631360. Its totient is φ = 181262858400.

The previous prime is 201972064933. The next prime is 201972064963. The reversal of 201972064943 is 349460279102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201972064943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201972064933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11885513 + ... + 11902493.

It is an arithmetic number, because the mean of its divisors is an integer number (13946976960).

Almost surely, 2^201972064943 is an apocalyptic number.

201972064943 is a deficient number, since it is larger than the sum of its proper divisors (21179566417).

201972064943 is a wasteful number, since it uses less digits than its factorization.

201972064943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30758.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 201972064943 in words is "two hundred one billion, nine hundred seventy-two million, sixty-four thousand, nine hundred forty-three".