42165554365 has 16 divisors (see below), whose sum is σ = 55204107840. Its totient is φ = 30662766720.

The previous prime is 42165554351. The next prime is 42165554369. The reversal of 42165554365 is 56345556124.

42165554365 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 42165554365 - 2⁹ = 42165553853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42165554369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610102 + ... + 675688.

It is an arithmetic number, because the mean of its divisors is an integer number (3450256740).

Almost surely, 2^42165554365 is an apocalyptic number.

It is an amenable number.

42165554365 is a deficient number, since it is larger than the sum of its proper divisors (13038553475).

42165554365 is a wasteful number, since it uses less digits than its factorization.

42165554365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77292.

The product of its digits is 2160000, while the sum is 46.

The spelling of 42165554365 in words is "forty-two billion, one hundred sixty-five million, five hundred fifty-four thousand, three hundred sixty-five".