1771349960243 has 4 divisors (see below), whose sum is σ = 1772497952688. Its totient is φ = 1770201967800.

The previous prime is 1771349960221. The next prime is 1771349960291. The reversal of 1771349960243 is 3420699431771.

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 1771349960243 - 2²² = 1771345765939 is a prime.

It is a super-3 number, since 3×1771349960243³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1771349860243) 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 in 3 ways as a sum of consecutive naturals, for example, 573993908 + ... + 573996993.

It is an arithmetic number, because the mean of its divisors is an integer number (443124488172).

Almost surely, 2^{1771349960243} is an apocalyptic number.

1771349960243 is a deficient number, since it is larger than the sum of its proper divisors (1147992445).

1771349960243 is a wasteful number, since it uses less digits than its factorization.

1771349960243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147992444.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 1771349960243 in words is "one trillion, seven hundred seventy-one billion, three hundred forty-nine million, nine hundred sixty thousand, two hundred forty-three".