42377644819 has 2 divisors, whose sum is σ = 42377644820. Its totient is φ = 42377644818.

The previous prime is 42377644763. The next prime is 42377644901. The reversal of 42377644819 is 91844677324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42377644819 - 2¹¹ = 42377642771 is a prime.

It is a super-2 number, since 2×42377644819² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42377644819.

It is not a weakly prime, because it can be changed into another prime (42377644919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21188822409 + 21188822410.

It is an arithmetic number, because the mean of its divisors is an integer number (21188822410).

Almost surely, 2^42377644819 is an apocalyptic number.

42377644819 is a deficient number, since it is larger than the sum of its proper divisors (1).

42377644819 is an equidigital number, since it uses as much as digits as its factorization.

42377644819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 55.

The spelling of 42377644819 in words is "forty-two billion, three hundred seventy-seven million, six hundred forty-four thousand, eight hundred nineteen".