42678954277 has 2 divisors, whose sum is σ = 42678954278. Its totient is φ = 42678954276.

The previous prime is 42678954247. The next prime is 42678954299. The reversal of 42678954277 is 77245987624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40888479681 + 1790474596 = 202209^2 + 42314^2 .

It is a cyclic number.

It is not a de Polignac number, because 42678954277 - 2²³ = 42670565669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42678954247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21339477138 + 21339477139.

It is an arithmetic number, because the mean of its divisors is an integer number (21339477139).

Almost surely, 2^42678954277 is an apocalyptic number.

It is an amenable number.

42678954277 is a deficient number, since it is larger than the sum of its proper divisors (1).

42678954277 is an equidigital number, since it uses as much as digits as its factorization.

42678954277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47416320, while the sum is 61.

The spelling of 42678954277 in words is "forty-two billion, six hundred seventy-eight million, nine hundred fifty-four thousand, two hundred seventy-seven".