2155295885543 has 4 divisors (see below), whose sum is σ = 2155927384968. Its totient is φ = 2154664386120.

The previous prime is 2155295885539. The next prime is 2155295885551. The reversal of 2155295885543 is 3455885925512.

It is a happy number.

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 2155295885543 - 2² = 2155295885539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155295885593) 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, 315744593 + ... + 315751418.

It is an arithmetic number, because the mean of its divisors is an integer number (538981846242).

Almost surely, 2^{2155295885543} is an apocalyptic number.

2155295885543 is a deficient number, since it is larger than the sum of its proper divisors (631499425).

2155295885543 is an equidigital number, since it uses as much as digits as its factorization.

2155295885543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631499424.

The product of its digits is 86400000, while the sum is 62.

The spelling of 2155295885543 in words is "two trillion, one hundred fifty-five billion, two hundred ninety-five million, eight hundred eighty-five thousand, five hundred forty-three".