4421025871816 has 8 divisors (see below), whose sum is σ = 8289423509670. Its totient is φ = 2210512935904.

The previous prime is 4421025871807. The next prime is 4421025871859. The reversal of 4421025871816 is 6181785201244.

It can be written as a sum of positive squares in only one way, i.e., 4110391308100 + 310634563716 = 2027410^2 + 557346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 4421025871816.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276314116981 + ... + 276314116996.

Almost surely, 2^{4421025871816} is an apocalyptic number.

It is an amenable number.

4421025871816 is a deficient number, since it is larger than the sum of its proper divisors (3868397637854).

4421025871816 is a wasteful number, since it uses less digits than its factorization.

4421025871816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552628233983 (or 552628233979 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 4421025871816 in words is "four trillion, four hundred twenty-one billion, twenty-five million, eight hundred seventy-one thousand, eight hundred sixteen".