2143348977794 has 8 divisors (see below), whose sum is σ = 3215802123660. Its totient is φ = 1071414936576.

The previous prime is 2143348977779. The next prime is 2143348977799. The reversal of 2143348977794 is 4977798433412.

It can be written as a sum of positive squares in 2 ways, for example, as 2118349257025 + 24999720769 = 1455455^2 + 158113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2143348977794² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2143348977799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129765839 + ... + 129782354.

Almost surely, 2^{2143348977794} is an apocalyptic number.

2143348977794 is a deficient number, since it is larger than the sum of its proper divisors (1072453145866).

2143348977794 is a wasteful number, since it uses less digits than its factorization.

2143348977794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259552324.

The product of its digits is 256048128, while the sum is 68.

The spelling of 2143348977794 in words is "two trillion, one hundred forty-three billion, three hundred forty-eight million, nine hundred seventy-seven thousand, seven hundred ninety-four".