2565173338042 has 8 divisors (see below), whose sum is σ = 4397440008096. Its totient is φ = 1099360002012.

The previous prime is 2565173338031. The next prime is 2565173338081. The reversal of 2565173338042 is 2408333715652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2565173338042² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91613333488 + ... + 91613333515.

It is an arithmetic number, because the mean of its divisors is an integer number (549680001012).

Almost surely, 2^{2565173338042} is an apocalyptic number.

2565173338042 is a deficient number, since it is larger than the sum of its proper divisors (1832266670054).

2565173338042 is a wasteful number, since it uses less digits than its factorization.

2565173338042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183226667012.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 2565173338042 in words is "two trillion, five hundred sixty-five billion, one hundred seventy-three million, three hundred thirty-eight thousand, forty-two".