2155457363843 has 8 divisors (see below), whose sum is σ = 2464488993120. Its totient is φ = 1846703021760.

The previous prime is 2155457363837. The next prime is 2155457363893. The reversal of 2155457363843 is 3483637545512.

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

It is a cyclic number.

It is not a de Polignac number, because 2155457363843 - 2⁴ = 2155457363827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155457363893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69305138 + ... + 69336231.

It is an arithmetic number, because the mean of its divisors is an integer number (308061124140).

Almost surely, 2^{2155457363843} is an apocalyptic number.

2155457363843 is a deficient number, since it is larger than the sum of its proper divisors (309031629277).

2155457363843 is a wasteful number, since it uses less digits than its factorization.

2155457363843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138643597.

The product of its digits is 36288000, while the sum is 56.

The spelling of 2155457363843 in words is "two trillion, one hundred fifty-five billion, four hundred fifty-seven million, three hundred sixty-three thousand, eight hundred forty-three".