42878516158546 has 8 divisors (see below), whose sum is σ = 64954583884044. Its totient is φ = 21226988197200.

The previous prime is 42878516158493. The next prime is 42878516158547. The reversal of 42878516158546 is 64585161587824.

It can be written as a sum of positive squares in 2 ways, for example, as 36699836525521 + 6178679633025 = 6058039^2 + 2485695^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (42878516158547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106134940785 + ... + 106134941188.

Almost surely, 2^{42878516158546} is an apocalyptic number.

42878516158546 is a deficient number, since it is larger than the sum of its proper divisors (22076067725498).

42878516158546 is a wasteful number, since it uses less digits than its factorization.

42878516158546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212269882076.

The product of its digits is 516096000, while the sum is 70.

The spelling of 42878516158546 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred sixteen million, one hundred fifty-eight thousand, five hundred forty-six".