4155869870881 has 2 divisors, whose sum is σ = 4155869870882. Its totient is φ = 4155869870880.

The previous prime is 4155869870879. The next prime is 4155869870899. The reversal of 4155869870881 is 1880789685514.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2242682958481 + 1913186912400 = 1497559^2 + 1383180^2 .

It is a cyclic number.

It is not a de Polignac number, because 4155869870881 - 2¹ = 4155869870879 is a prime.

It is a super-2 number, since 2×4155869870881² (a number of 26 digits) contains 22 as substring.

Together with 4155869870879, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4155869870881.

It is not a weakly prime, because it can be changed into another prime (4155869870381) 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 as a sum of consecutive naturals, namely, 2077934935440 + 2077934935441.

It is an arithmetic number, because the mean of its divisors is an integer number (2077934935441).

Almost surely, 2^{4155869870881} is an apocalyptic number.

It is an amenable number.

4155869870881 is a deficient number, since it is larger than the sum of its proper divisors (1).

4155869870881 is an equidigital number, since it uses as much as digits as its factorization.

4155869870881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 154828800, while the sum is 70.

The spelling of 4155869870881 in words is "four trillion, one hundred fifty-five billion, eight hundred sixty-nine million, eight hundred seventy thousand, eight hundred eighty-one".