8145989557924 has 27 divisors (see below), whose sum is σ = 14391034687393. Its totient is φ = 4034626870688.

The previous prime is 8145989557907. The next prime is 8145989557939. The reversal of 8145989557924 is 4297559895418.

The square root of 8145989557924 is 2854118.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2285871848100 + 5860117709824 = 1511910^2 + 2420768^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 610774584 + ... + 610787920.

Almost surely, 2^{8145989557924} is an apocalyptic number.

8145989557924 is the 2854118-th square number.

It is an amenable number.

8145989557924 is a deficient number, since it is larger than the sum of its proper divisors (6245045129469).

8145989557924 is an frugal number, since it uses more digits than its factorization.

8145989557924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26892 (or 13446 counting only the distinct ones).

The product of its digits is 1306368000, while the sum is 76.

The spelling of 8145989557924 in words is "eight trillion, one hundred forty-five billion, nine hundred eighty-nine million, five hundred fifty-seven thousand, nine hundred twenty-four".