4521278979444 has 48 divisors (see below), whose sum is σ = 10565909121600. Its totient is φ = 1504770812160.

The previous prime is 4521278979443. The next prime is 4521278979463. The reversal of 4521278979444 is 4449798721254.

Its product of digits (162570240) is a multiple of the sum of its prime factors (51840).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521278979443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125597512 + ... + 125633504.

It is an arithmetic number, because the mean of its divisors is an integer number (220123106700).

Almost surely, 2^{4521278979444} is an apocalyptic number.

It is an amenable number.

4521278979444 is an abundant number, since it is smaller than the sum of its proper divisors (6044630142156).

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

4521278979444 is a wasteful number, since it uses less digits than its factorization.

4521278979444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51840 (or 51838 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 66.

The spelling of 4521278979444 in words is "four trillion, five hundred twenty-one billion, two hundred seventy-eight million, nine hundred seventy-nine thousand, four hundred forty-four".