42433313977 has 2 divisors, whose sum is σ = 42433313978. Its totient is φ = 42433313976.

The previous prime is 42433313971. The next prime is 42433314013. The reversal of 42433313977 is 77931333424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31150838016 + 11282475961 = 176496^2 + 106219^2 .

It is a cyclic number.

It is not a de Polignac number, because 42433313977 - 2³¹ = 40285830329 is a prime.

It is a super-2 number, since 2×42433313977² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42433313971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21216656988 + 21216656989.

It is an arithmetic number, because the mean of its divisors is an integer number (21216656989).

Almost surely, 2^42433313977 is an apocalyptic number.

It is an amenable number.

42433313977 is a deficient number, since it is larger than the sum of its proper divisors (1).

42433313977 is an equidigital number, since it uses as much as digits as its factorization.

42433313977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 46.

The spelling of 42433313977 in words is "forty-two billion, four hundred thirty-three million, three hundred thirteen thousand, nine hundred seventy-seven".