4578722271881 has 2 divisors, whose sum is σ = 4578722271882. Its totient is φ = 4578722271880.

The previous prime is 4578722271869. The next prime is 4578722271883. The reversal of 4578722271881 is 1881722278754.

4578722271881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3457963393600 + 1120758878281 = 1859560^2 + 1058659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4578722271881 is a prime.

It is a super-2 number, since 2×4578722271881² (a number of 26 digits) contains 22 as substring.

Together with 4578722271883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4578722271883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2289361135940 + 2289361135941.

It is an arithmetic number, because the mean of its divisors is an integer number (2289361135941).

Almost surely, 2^{4578722271881} is an apocalyptic number.

It is an amenable number.

4578722271881 is a deficient number, since it is larger than the sum of its proper divisors (1).

4578722271881 is an equidigital number, since it uses as much as digits as its factorization.

4578722271881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28098560, while the sum is 62.

The spelling of 4578722271881 in words is "four trillion, five hundred seventy-eight billion, seven hundred twenty-two million, two hundred seventy-one thousand, eight hundred eighty-one".