4455778775544 has 48 divisors (see below), whose sum is σ = 12067962491520. Its totient is φ = 1485231492480.

The previous prime is 4455778775533. The next prime is 4455778775579.

4455778775544 is a `hidden beast` number, since 4 + 4 + 5 + 5 + 7 + 7 + 8 + 7 + 75 + 544 = 666.

4455778775544 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3437404 + ... + 4552724.

It is an arithmetic number, because the mean of its divisors is an integer number (251415885240).

Almost surely, 2^{4455778775544} is an apocalyptic number.

It is an amenable number.

4455778775544 is an abundant number, since it is smaller than the sum of its proper divisors (7612183715976).

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

4455778775544 is a wasteful number, since it uses less digits than its factorization.

4455778775544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170820 (or 1170813 counting only the distinct ones).

The product of its digits is 3073280000, while the sum is 72.

The spelling of 4455778775544 in words is "four trillion, four hundred fifty-five billion, seven hundred seventy-eight million, seven hundred seventy-five thousand, five hundred forty-four".