4216878257 has 4 divisors (see below), whose sum is σ = 4238068800. Its totient is φ = 4195687716.

The previous prime is 4216878251. The next prime is 4216878269. The reversal of 4216878257 is 7528786124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4216878257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4216878251) 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, 10594973 + ... + 10595370.

It is an arithmetic number, because the mean of its divisors is an integer number (1059517200).

Almost surely, 2^4216878257 is an apocalyptic number.

It is an amenable number.

4216878257 is a deficient number, since it is larger than the sum of its proper divisors (21190543).

4216878257 is a wasteful number, since it uses less digits than its factorization.

4216878257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21190542.

The product of its digits is 1505280, while the sum is 50.

The square root of 4216878257 is about 64937.4950009623. The cubic root of 4216878257 is about 1615.5870163640.

The spelling of 4216878257 in words is "four billion, two hundred sixteen million, eight hundred seventy-eight thousand, two hundred fifty-seven".