2628794681478 has 48 divisors (see below), whose sum is σ = 6509557934880. Its totient is φ = 751065550848.

The previous prime is 2628794681347. The next prime is 2628794681497. The reversal of 2628794681478 is 8741864978262.

2628794681478 is a `hidden beast` number, since 2 + 6 + 2 + 8 + 7 + 94 + 68 + 1 + 478 = 666.

It is a super-2 number, since 2×2628794681478² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5310726 + ... + 5784582.

It is an arithmetic number, because the mean of its divisors is an integer number (135615790310).

Almost surely, 2^{2628794681478} is an apocalyptic number.

2628794681478 is an abundant number, since it is smaller than the sum of its proper divisors (3880763253402).

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

2628794681478 is a wasteful number, since it uses less digits than its factorization.

2628794681478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517901 (or 517898 counting only the distinct ones).

The product of its digits is 520224768, while the sum is 72.

The spelling of 2628794681478 in words is "two trillion, six hundred twenty-eight billion, seven hundred ninety-four million, six hundred eighty-one thousand, four hundred seventy-eight".