1243845873351 has 6 divisors (see below), whose sum is σ = 1796666261520. Its totient is φ = 829230582228.

The previous prime is 1243845873337. The next prime is 1243845873359. The reversal of 1243845873351 is 1533785483421.

1243845873351 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 8 + 4 + 587 + 3 + 3 + 51 = 666.

It is not a de Polignac number, because 1243845873351 - 2¹³ = 1243845865159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243845873359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69102548511 + ... + 69102548528.

It is an arithmetic number, because the mean of its divisors is an integer number (299444376920).

Almost surely, 2^{1243845873351} is an apocalyptic number.

1243845873351 is a deficient number, since it is larger than the sum of its proper divisors (552820388169).

1243845873351 is a wasteful number, since it uses less digits than its factorization.

1243845873351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138205097045 (or 138205097042 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 1243845873351 in words is "one trillion, two hundred forty-three billion, eight hundred forty-five million, eight hundred seventy-three thousand, three hundred fifty-one".