8442145577 has 4 divisors (see below), whose sum is σ = 8447562240. Its totient is φ = 8436728916.

The previous prime is 8442145573. The next prime is 8442145597. The reversal of 8442145577 is 7755412448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8442145577 - 2² = 8442145573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8442145573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2705993 + ... + 2709110.

It is an arithmetic number, because the mean of its divisors is an integer number (2111890560).

Almost surely, 2^8442145577 is an apocalyptic number.

It is an amenable number.

8442145577 is a deficient number, since it is larger than the sum of its proper divisors (5416663).

8442145577 is a wasteful number, since it uses less digits than its factorization.

8442145577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5416662.

The product of its digits is 1254400, while the sum is 47.

The square root of 8442145577 is about 91881.1491928567. The cubic root of 8442145577 is about 2036.1867745928.

The spelling of 8442145577 in words is "eight billion, four hundred forty-two million, one hundred forty-five thousand, five hundred seventy-seven".