42861969655 has 4 divisors (see below), whose sum is σ = 51434363592. Its totient is φ = 34289575720.

The previous prime is 42861969649. The next prime is 42861969691. The reversal of 42861969655 is 55696916824.

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

It is not a de Polignac number, because 42861969655 - 2²⁹ = 42325098743 is a prime.

It is a super-2 number, since 2×42861969655² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42861969593 and 42861969602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4286196961 + ... + 4286196970.

It is an arithmetic number, because the mean of its divisors is an integer number (12858590898).

Almost surely, 2^42861969655 is an apocalyptic number.

42861969655 is a deficient number, since it is larger than the sum of its proper divisors (8572393937).

42861969655 is an equidigital number, since it uses as much as digits as its factorization.

42861969655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8572393936.

The product of its digits is 27993600, while the sum is 61.

The spelling of 42861969655 in words is "forty-two billion, eight hundred sixty-one million, nine hundred sixty-nine thousand, six hundred fifty-five".