2478069217 has 4 divisors (see below), whose sum is σ = 2668689940. Its totient is φ = 2287448496.

The previous prime is 2478069179. The next prime is 2478069259. The reversal of 2478069217 is 7129608742.

2478069217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7129608742 = 2 ⋅3564804371.

It can be written as a sum of positive squares in 2 ways, for example, as 764854336 + 1713214881 = 27656^2 + 41391^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478069217 - 2³¹ = 330585569 is a prime.

It is a super-2 number, since 2×2478069217² = 12281654088485986178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2478069017) 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, 95310342 + ... + 95310367.

It is an arithmetic number, because the mean of its divisors is an integer number (667172485).

Almost surely, 2^2478069217 is an apocalyptic number.

It is an amenable number.

2478069217 is a deficient number, since it is larger than the sum of its proper divisors (190620723).

2478069217 is a wasteful number, since it uses less digits than its factorization.

2478069217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190620722.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 2478069217 is about 49780.2090895569. The cubic root of 2478069217 is about 1353.2285265012.

The spelling of 2478069217 in words is "two billion, four hundred seventy-eight million, sixty-nine thousand, two hundred seventeen".