42563991677 has 16 divisors (see below), whose sum is σ = 43215353280. Its totient is φ = 41918572800.

The previous prime is 42563991647. The next prime is 42563991683. The reversal of 42563991677 is 77619936524.

It is a cyclic number.

It is not a de Polignac number, because 42563991677 - 2¹² = 42563987581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42563991647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13903727 + ... + 13906787.

It is an arithmetic number, because the mean of its divisors is an integer number (2700959580).

Almost surely, 2^42563991677 is an apocalyptic number.

It is an amenable number.

42563991677 is a deficient number, since it is larger than the sum of its proper divisors (651361603).

42563991677 is a wasteful number, since it uses less digits than its factorization.

42563991677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964.

The product of its digits is 17146080, while the sum is 59.

The spelling of 42563991677 in words is "forty-two billion, five hundred sixty-three million, nine hundred ninety-one thousand, six hundred seventy-seven".