42877808819 has 4 divisors (see below), whose sum is σ = 42889280280. Its totient is φ = 42866337360.

The previous prime is 42877808797. The next prime is 42877808843. The reversal of 42877808819 is 91880877824.

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 42877808819 - 2⁸ = 42877808563 is a prime.

It is a super-2 number, since 2×42877808819² (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 (42877808879) 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, 5730122 + ... + 5737599.

It is an arithmetic number, because the mean of its divisors is an integer number (10722320070).

Almost surely, 2^42877808819 is an apocalyptic number.

42877808819 is a deficient number, since it is larger than the sum of its proper divisors (11471461).

42877808819 is a wasteful number, since it uses less digits than its factorization.

42877808819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11471460.

The product of its (nonzero) digits is 14450688, while the sum is 62.

The spelling of 42877808819 in words is "forty-two billion, eight hundred seventy-seven million, eight hundred eight thousand, eight hundred nineteen".