5561444478372 has 24 divisors (see below), whose sum is σ = 12993846081216. Its totient is φ = 1851365926368.

The previous prime is 5561444478347. The next prime is 5561444478383. The reversal of 5561444478372 is 2738744441655.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306103008 + ... + 306121175.

It is an arithmetic number, because the mean of its divisors is an integer number (541410253384).

Almost surely, 2^{5561444478372} is an apocalyptic number.

It is an amenable number.

5561444478372 is an abundant number, since it is smaller than the sum of its proper divisors (7432401602844).

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

5561444478372 is a wasteful number, since it uses less digits than its factorization.

5561444478372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612224947 (or 612224945 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 60.

The spelling of 5561444478372 in words is "five trillion, five hundred sixty-one billion, four hundred forty-four million, four hundred seventy-eight thousand, three hundred seventy-two".