42077257687 has 2 divisors, whose sum is σ = 42077257688. Its totient is φ = 42077257686.

The previous prime is 42077257667. The next prime is 42077257837. The reversal of 42077257687 is 78675277024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42077257687 - 2¹⁹ = 42076733399 is a prime.

It is a super-2 number, since 2×42077257687² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42077257627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21038628843 + 21038628844.

It is an arithmetic number, because the mean of its divisors is an integer number (21038628844).

Almost surely, 2^42077257687 is an apocalyptic number.

42077257687 is a deficient number, since it is larger than the sum of its proper divisors (1).

42077257687 is an equidigital number, since it uses as much as digits as its factorization.

42077257687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9219840, while the sum is 55.

The spelling of 42077257687 in words is "forty-two billion, seventy-seven million, two hundred fifty-seven thousand, six hundred eighty-seven".