42145552558779 has 16 divisors (see below), whose sum is σ = 58007058115584. Its totient is φ = 27190549648800.

The previous prime is 42145552558777. The next prime is 42145552558793. The reversal of 42145552558779 is 97785525554124.

It is a happy number.

42145552558779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42145552558779 - 2¹ = 42145552558777 is a prime.

It is a super-2 number, since 2×42145552558779² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42145552558777) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20977297 + ... + 22898429.

It is an arithmetic number, because the mean of its divisors is an integer number (3625441132224).

Almost surely, 2^{42145552558779} is an apocalyptic number.

42145552558779 is a deficient number, since it is larger than the sum of its proper divisors (15861505556805).

42145552558779 is a wasteful number, since it uses less digits than its factorization.

42145552558779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157058.

The product of its digits is 705600000, while the sum is 69.

The spelling of 42145552558779 in words is "forty-two trillion, one hundred forty-five billion, five hundred fifty-two million, five hundred fifty-eight thousand, seven hundred seventy-nine".