42093694668855 has 32 divisors (see below), whose sum is σ = 67379819318784. Its totient is φ = 22440002772096.

The previous prime is 42093694668853. The next prime is 42093694668931. The reversal of 42093694668855 is 55886649639024.

It is not a de Polignac number, because 42093694668855 - 2¹ = 42093694668853 is a prime.

It is a super-2 number, since 2×42093694668855² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (75) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42093694668853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505630864 + ... + 505714106.

It is an arithmetic number, because the mean of its divisors is an integer number (2105619353712).

Almost surely, 2^{42093694668855} is an apocalyptic number.

42093694668855 is a deficient number, since it is larger than the sum of its proper divisors (25286124649929).

42093694668855 is a wasteful number, since it uses less digits than its factorization.

42093694668855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97815.

The product of its (nonzero) digits is 2687385600, while the sum is 75.

The spelling of 42093694668855 in words is "forty-two trillion, ninety-three billion, six hundred ninety-four million, six hundred sixty-eight thousand, eight hundred fifty-five".