8155953347243 has 4 divisors (see below), whose sum is σ = 8783334373968. Its totient is φ = 7528572320520.

The previous prime is 8155953347237. The next prime is 8155953347257. The reversal of 8155953347243 is 3427433595518.

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 8155953347243 - 2²⁰ = 8155952298667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8155953347273) 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, 313690513343 + ... + 313690513368.

It is an arithmetic number, because the mean of its divisors is an integer number (2195833593492).

Almost surely, 2^{8155953347243} is an apocalyptic number.

8155953347243 is a deficient number, since it is larger than the sum of its proper divisors (627381026725).

8155953347243 is a wasteful number, since it uses less digits than its factorization.

8155953347243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627381026724.

The product of its digits is 54432000, while the sum is 59.

The spelling of 8155953347243 in words is "eight trillion, one hundred fifty-five billion, nine hundred fifty-three million, three hundred forty-seven thousand, two hundred forty-three".