42814579861 has 4 divisors (see below), whose sum is σ = 42815595424. Its totient is φ = 42813564300.

The previous prime is 42814579811. The next prime is 42814579889. The reversal of 42814579861 is 16897541824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42814579861 is a prime.

It is a super-3 number, since 3×42814579861³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42814579811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441675 + ... + 529816.

It is an arithmetic number, because the mean of its divisors is an integer number (10703898856).

Almost surely, 2^42814579861 is an apocalyptic number.

It is an amenable number.

42814579861 is a deficient number, since it is larger than the sum of its proper divisors (1015563).

42814579861 is an equidigital number, since it uses as much as digits as its factorization.

42814579861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015562.

The product of its digits is 3870720, while the sum is 55.

The spelling of 42814579861 in words is "forty-two billion, eight hundred fourteen million, five hundred seventy-nine thousand, eight hundred sixty-one".