2478863466 has 64 divisors (see below), whose sum is σ = 5928370560. Its totient is φ = 764916480.

The previous prime is 2478863461. The next prime is 2478863473. The reversal of 2478863466 is 6643688742.

2478863466 is a `hidden beast` number, since 2 + 47 + 88 + 63 + 466 = 666.

It is a super-2 number, since 2×2478863466² = 12289528166139066312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2478863461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33865 + ... + 78131.

It is an arithmetic number, because the mean of its divisors is an integer number (92630790).

Almost surely, 2^2478863466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2478863466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2964185280).

2478863466 is an abundant number, since it is smaller than the sum of its proper divisors (3449507094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2478863466 is a wasteful number, since it uses less digits than its factorization.

2478863466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44356 (or 44350 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The square root of 2478863466 is about 49788.1860083293. The cubic root of 2478863466 is about 1353.3730860355.

The spelling of 2478863466 in words is "two billion, four hundred seventy-eight million, eight hundred sixty-three thousand, four hundred sixty-six".