42865543003685 has 16 divisors (see below), whose sum is σ = 51499154756160. Its totient is φ = 34252112079360.

The previous prime is 42865543003681. The next prime is 42865543003691. The reversal of 42865543003685 is 58630034556824.

It is a happy number.

It is not a de Polignac number, because 42865543003685 - 2² = 42865543003681 is a prime.

It is a super-3 number, since 3×42865543003685³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42865543003681) 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, 25438190 + ... + 27070880.

It is an arithmetic number, because the mean of its divisors is an integer number (3218697172260).

Almost surely, 2^{42865543003685} is an apocalyptic number.

It is an amenable number.

42865543003685 is a deficient number, since it is larger than the sum of its proper divisors (8633611752475).

42865543003685 is a wasteful number, since it uses less digits than its factorization.

42865543003685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638868.

The product of its (nonzero) digits is 82944000, while the sum is 59.

The spelling of 42865543003685 in words is "forty-two trillion, eight hundred sixty-five billion, five hundred forty-three million, three thousand, six hundred eighty-five".