42881808024045 has 24 divisors (see below), whose sum is σ = 74801896981656. Its totient is φ = 22724626923648.

The previous prime is 42881808024023. The next prime is 42881808024049. The reversal of 42881808024045 is 54042080818824.

It is a happy number.

42881808024045 is a `hidden beast` number, since 4 + 2 + 8 + 81 + 80 + 80 + 2 + 404 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1078833291561 + 41802974732484 = 1038669^2 + 6465522^2 .

It is not a de Polignac number, because 42881808024045 - 2¹⁵ = 42881807991277 is a prime.

It is a super-2 number, since 2×42881808024045² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42881808023982 and 42881808024000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42881808024049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3034798882 + ... + 3034813011.

It is an arithmetic number, because the mean of its divisors is an integer number (3116745707569).

Almost surely, 2^{42881808024045} is an apocalyptic number.

42881808024045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42881808024045 is a deficient number, since it is larger than the sum of its proper divisors (31920088957611).

42881808024045 is a wasteful number, since it uses less digits than its factorization.

42881808024045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069612061 (or 6069612058 counting only the distinct ones).

The product of its (nonzero) digits is 5242880, while the sum is 54.

The spelling of 42881808024045 in words is "forty-two trillion, eight hundred eighty-one billion, eight hundred eight million, twenty-four thousand, forty-five".