42216588881 has 4 divisors (see below), whose sum is σ = 42220484592. Its totient is φ = 42212693172.

The previous prime is 42216588877. The next prime is 42216588899. The reversal of 42216588881 is 18888561224.

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 not a de Polignac number, because 42216588881 - 2² = 42216588877 is a prime.

It is a super-2 number, since 2×42216588881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42216588811) 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, 1931555 + ... + 1953288.

It is an arithmetic number, because the mean of its divisors is an integer number (10555121148).

Almost surely, 2^42216588881 is an apocalyptic number.

It is an amenable number.

42216588881 is a deficient number, since it is larger than the sum of its proper divisors (3895711).

42216588881 is a wasteful number, since it uses less digits than its factorization.

42216588881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3895710.

The product of its digits is 1966080, while the sum is 53.

The spelling of 42216588881 in words is "forty-two billion, two hundred sixteen million, five hundred eighty-eight thousand, eight hundred eighty-one".