42779976719 has 32 divisors (see below), whose sum is σ = 47021990400. Its totient is φ = 38805419520.

The previous prime is 42779976713. The next prime is 42779976721. The reversal of 42779976719 is 91767997724.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42779976719 - 2⁴ = 42779976703 is a prime.

It is a super-2 number, since 2×42779976719² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42779976713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18526337 + ... + 18528645.

It is an arithmetic number, because the mean of its divisors is an integer number (1469437200).

Almost surely, 2^42779976719 is an apocalyptic number.

42779976719 is a deficient number, since it is larger than the sum of its proper divisors (4242013681).

42779976719 is a wasteful number, since it uses less digits than its factorization.

42779976719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963.

The product of its digits is 84015792, while the sum is 68.

The spelling of 42779976719 in words is "forty-two billion, seven hundred seventy-nine million, nine hundred seventy-six thousand, seven hundred nineteen".