42878514235447 has 8 divisors (see below), whose sum is σ = 46998250849152. Its totient is φ = 38795725932600.

The previous prime is 42878514235343. The next prime is 42878514235691. The reversal of 42878514235447 is 74453241587824.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42878514235447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42878514215447) 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, 9237075283 + ... + 9237079924.

It is an arithmetic number, because the mean of its divisors is an integer number (5874781356144).

Almost surely, 2^{42878514235447} is an apocalyptic number.

42878514235447 is a deficient number, since it is larger than the sum of its proper divisors (4119736613705).

42878514235447 is a wasteful number, since it uses less digits than its factorization.

42878514235447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18474155429.

The product of its digits is 240844800, while the sum is 64.

The spelling of 42878514235447 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred fourteen million, two hundred thirty-five thousand, four hundred forty-seven".