2478671446868 has 24 divisors (see below), whose sum is σ = 4349459538984. Its totient is φ = 1235971584000.

The previous prime is 2478671446847. The next prime is 2478671446897. The reversal of 2478671446868 is 8686441768742.

It can be written as a sum of positive squares in 4 ways, for example, as 127319085124 + 2351352361744 = 356818^2 + 1533412^2 .

It is a super-2 number, since 2×2478671446868² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3118388 + ... + 3831668.

It is an arithmetic number, because the mean of its divisors is an integer number (181227480791).

Almost surely, 2^{2478671446868} is an apocalyptic number.

It is an amenable number.

2478671446868 is a deficient number, since it is larger than the sum of its proper divisors (1870788092116).

2478671446868 is a wasteful number, since it uses less digits than its factorization.

2478671446868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715643 (or 715641 counting only the distinct ones).

The product of its digits is 693633024, while the sum is 71.

The spelling of 2478671446868 in words is "two trillion, four hundred seventy-eight billion, six hundred seventy-one million, four hundred forty-six thousand, eight hundred sixty-eight".