843742880201 has 4 divisors (see below), whose sum is σ = 908646178692. Its totient is φ = 778839581712.

The previous prime is 843742880147. The next prime is 843742880257. The reversal of 843742880201 is 102088247348.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 398388192400 + 445354687801 = 631180^2 + 667349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-843742880201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (843742880501) 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, 32451649226 + ... + 32451649251.

It is an arithmetic number, because the mean of its divisors is an integer number (227161544673).

Almost surely, 2^843742880201 is an apocalyptic number.

It is an amenable number.

843742880201 is a deficient number, since it is larger than the sum of its proper divisors (64903298491).

843742880201 is a wasteful number, since it uses less digits than its factorization.

843742880201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64903298490.

The product of its (nonzero) digits is 688128, while the sum is 47.

The spelling of 843742880201 in words is "eight hundred forty-three billion, seven hundred forty-two million, eight hundred eighty thousand, two hundred one".