654120078444 has 90 divisors (see below), whose sum is σ = 1989182667780. Its totient is φ = 186891446448.

The previous prime is 654120078439. The next prime is 654120078449. The reversal of 654120078444 is 444870021456.

654120078444 is a `hidden beast` number, since 6 + 541 + 20 + 0 + 7 + 84 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (654120078439) and next prime (654120078449).

It is a super-2 number, since 2×654120078444² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 654120078444.

It is not an unprimeable number, because it can be changed into a prime (654120078449) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 20585034 + ... + 20616785.

It is an arithmetic number, because the mean of its divisors is an integer number (22102029642).

Almost surely, 2^654120078444 is an apocalyptic number.

It is an amenable number.

654120078444 is an abundant number, since it is smaller than the sum of its proper divisors (1335062589336).

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

654120078444 is a wasteful number, since it uses less digits than its factorization.

654120078444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41201849 (or 41201831 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The spelling of 654120078444 in words is "six hundred fifty-four billion, one hundred twenty million, seventy-eight thousand, four hundred forty-four".