3865287432427 has 4 divisors (see below), whose sum is σ = 3869343348840. Its totient is φ = 3861231516016.

The previous prime is 3865287432421. The next prime is 3865287432431. The reversal of 3865287432427 is 7242347825683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3865287432427 - 2⁷ = 3865287432299 is a prime.

It is a super-2 number, since 2×3865287432427² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3865287432421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027956777 + ... + 2027958682.

It is an arithmetic number, because the mean of its divisors is an integer number (967335837210).

Almost surely, 2^{3865287432427} is an apocalyptic number.

3865287432427 is a deficient number, since it is larger than the sum of its proper divisors (4055916413).

3865287432427 is an equidigital number, since it uses as much as digits as its factorization.

3865287432427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055916412.

The product of its digits is 108380160, while the sum is 61.

The spelling of 3865287432427 in words is "three trillion, eight hundred sixty-five billion, two hundred eighty-seven million, four hundred thirty-two thousand, four hundred twenty-seven".