42643993777 has 8 divisors (see below), whose sum is σ = 53166537792. Its totient is φ = 33229086000.

The previous prime is 42643993739. The next prime is 42643993783. The reversal of 42643993777 is 77739934624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42643993777 - 2³⁵ = 8284255409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42643993787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276908974 + ... + 276909127.

It is an arithmetic number, because the mean of its divisors is an integer number (6645817224).

Almost surely, 2^42643993777 is an apocalyptic number.

It is an amenable number.

42643993777 is a deficient number, since it is larger than the sum of its proper divisors (10522544015).

42643993777 is a wasteful number, since it uses less digits than its factorization.

42643993777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553818119.

The product of its digits is 48009024, while the sum is 61.

The spelling of 42643993777 in words is "forty-two billion, six hundred forty-three million, nine hundred ninety-three thousand, seven hundred seventy-seven".