42166213365 has 16 divisors (see below), whose sum is σ = 67819170816. Its totient is φ = 22370904000.

The previous prime is 42166213357. The next prime is 42166213379. The reversal of 42166213365 is 56331266124.

It is not a de Polignac number, because 42166213365 - 2³ = 42166213357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7355986 + ... + 7361715.

It is an arithmetic number, because the mean of its divisors is an integer number (4238698176).

Almost surely, 2^42166213365 is an apocalyptic number.

It is an amenable number.

42166213365 is a deficient number, since it is larger than the sum of its proper divisors (25652957451).

42166213365 is a wasteful number, since it uses less digits than its factorization.

42166213365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14717900.

The product of its digits is 155520, while the sum is 39.

Adding to 42166213365 its reverse (56331266124), we get a palindrome (98497479489).

The spelling of 42166213365 in words is "forty-two billion, one hundred sixty-six million, two hundred thirteen thousand, three hundred sixty-five".