4081818564744 has 64 divisors (see below), whose sum is σ = 10214496230400. Its totient is φ = 1359280213824.

The previous prime is 4081818564737. The next prime is 4081818564793. The reversal of 4081818564744 is 4474658181804.

It is a happy number.

It is a super-2 number, since 2×4081818564744² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108983829 + ... + 109021275.

It is an arithmetic number, because the mean of its divisors is an integer number (159601503600).

Almost surely, 2^{4081818564744} is an apocalyptic number.

It is an amenable number.

4081818564744 is an abundant number, since it is smaller than the sum of its proper divisors (6132677665656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4081818564744 is a wasteful number, since it uses less digits than its factorization.

4081818564744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41762 (or 41758 counting only the distinct ones).

The product of its (nonzero) digits is 27525120, while the sum is 60.

The spelling of 4081818564744 in words is "four trillion, eighty-one billion, eight hundred eighteen million, five hundred sixty-four thousand, seven hundred forty-four".