42635253778 has 16 divisors (see below), whose sum is σ = 71866783296. Its totient is φ = 18822252240.

The previous prime is 42635253767. The next prime is 42635253779. The reversal of 42635253778 is 87735253624.

It is not an unprimeable number, because it can be changed into a prime (42635253779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35647608 + ... + 35648803.

It is an arithmetic number, because the mean of its divisors is an integer number (4491673956).

Almost surely, 2^42635253778 is an apocalyptic number.

42635253778 is a deficient number, since it is larger than the sum of its proper divisors (29231529518).

42635253778 is a wasteful number, since it uses less digits than its factorization.

42635253778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71296449.

The product of its digits is 8467200, while the sum is 52.

The spelling of 42635253778 in words is "forty-two billion, six hundred thirty-five million, two hundred fifty-three thousand, seven hundred seventy-eight".