42878331613736 has 64 divisors (see below), whose sum is σ = 85990381753680. Its totient is φ = 19974006046720.

The previous prime is 42878331613729. The next prime is 42878331613739. The reversal of 42878331613736 is 63731613387824.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 16545320948836 + 26333010664900 = 4067594^2 + 5131570^2 .

It is not an unprimeable number, because it can be changed into a prime (42878331613739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3317426 + ... + 9836766.

Almost surely, 2^{42878331613736} is an apocalyptic number.

It is an amenable number.

42878331613736 is an abundant number, since it is smaller than the sum of its proper divisors (43112050139944).

42878331613736 is a wasteful number, since it uses less digits than its factorization.

42878331613736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6519854 (or 6519850 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 62.

The spelling of 42878331613736 in words is "forty-two trillion, eight hundred seventy-eight billion, three hundred thirty-one million, six hundred thirteen thousand, seven hundred thirty-six".