665172410444 has 48 divisors (see below), whose sum is σ = 1187550389760. Its totient is φ = 325933009920.

The previous prime is 665172410437. The next prime is 665172410491. The reversal of 665172410444 is 444014271566.

665172410444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 665172410395 and 665172410404.

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, 113102384 + ... + 113108264.

It is an arithmetic number, because the mean of its divisors is an integer number (24740633120).

Almost surely, 2^665172410444 is an apocalyptic number.

It is an amenable number.

665172410444 is a deficient number, since it is larger than the sum of its proper divisors (522377979316).

665172410444 is a wasteful number, since it uses less digits than its factorization.

665172410444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8370 (or 8368 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 665172410444 in words is "six hundred sixty-five billion, one hundred seventy-two million, four hundred ten thousand, four hundred forty-four".