42777786415 has 16 divisors (see below), whose sum is σ = 63179500608. Its totient is φ = 27076928256.

The previous prime is 42777786377. The next prime is 42777786419. The reversal of 42777786415 is 51468777724.

It is not a de Polignac number, because 42777786415 - 2²⁹ = 42240915503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42777786415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42777786419) 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 15 ways as a sum of consecutive naturals, for example, 47008102 + ... + 47009011.

It is an arithmetic number, because the mean of its divisors is an integer number (3948718788).

Almost surely, 2^42777786415 is an apocalyptic number.

42777786415 is a deficient number, since it is larger than the sum of its proper divisors (20401714193).

42777786415 is a wasteful number, since it uses less digits than its factorization.

42777786415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94017138.

The product of its digits is 18439680, while the sum is 58.

The spelling of 42777786415 in words is "forty-two billion, seven hundred seventy-seven million, seven hundred eighty-six thousand, four hundred fifteen".