42878275251217 has 8 divisors (see below), whose sum is σ = 49003782765696. Its totient is φ = 36752777642112.

The previous prime is 42878275251197. The next prime is 42878275251257. The reversal of 42878275251217 is 71215257287824.

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

It is not a de Polignac number, because 42878275251217 - 2⁷ = 42878275251089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42878275251257) 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, 15478113 + ... + 18036865.

It is an arithmetic number, because the mean of its divisors is an integer number (6125472845712).

Almost surely, 2^{42878275251217} is an apocalyptic number.

It is an amenable number.

42878275251217 is a deficient number, since it is larger than the sum of its proper divisors (6125507514479).

42878275251217 is a wasteful number, since it uses less digits than its factorization.

42878275251217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4952687.

The product of its digits is 35123200, while the sum is 61.

The spelling of 42878275251217 in words is "forty-two trillion, eight hundred seventy-eight billion, two hundred seventy-five million, two hundred fifty-one thousand, two hundred seventeen".