8621445144 has 64 divisors (see below), whose sum is σ = 24576985440. Its totient is φ = 2496706560.

The previous prime is 8621445101. The next prime is 8621445169. The reversal of 8621445144 is 4415441268.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

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, 807427 + ... + 818034.

Almost surely, 2^8621445144 is an apocalyptic number.

It is an amenable number.

8621445144 is an abundant number, since it is smaller than the sum of its proper divisors (15955540296).

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

8621445144 is a wasteful number, since it uses less digits than its factorization.

8621445144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625500 (or 1625496 counting only the distinct ones).

The product of its digits is 122880, while the sum is 39.

The square root of 8621445144 is about 92851.7374312403. The cubic root of 8621445144 is about 2050.5011778007.

The spelling of 8621445144 in words is "eight billion, six hundred twenty-one million, four hundred forty-five thousand, one hundred forty-four".