42811586977 has 4 divisors (see below), whose sum is σ = 43204353940. Its totient is φ = 42418820016.

The previous prime is 42811586969. The next prime is 42811587001. The reversal of 42811586977 is 77968511824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37995365776 + 4816221201 = 194924^2 + 69399^2 .

It is a cyclic number.

It is not a de Polignac number, because 42811586977 - 2³ = 42811586969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42811586947) 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, 196383318 + ... + 196383535.

It is an arithmetic number, because the mean of its divisors is an integer number (10801088485).

Almost surely, 2^42811586977 is an apocalyptic number.

It is an amenable number.

42811586977 is a deficient number, since it is larger than the sum of its proper divisors (392766963).

42811586977 is a wasteful number, since it uses less digits than its factorization.

42811586977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392766962.

The product of its digits is 6773760, while the sum is 58.

The spelling of 42811586977 in words is "forty-two billion, eight hundred eleven million, five hundred eighty-six thousand, nine hundred seventy-seven".