278628460638612 has 48 divisors (see below), whose sum is σ = 751357646686080. Its totient is φ = 78713658220032.

The previous prime is 278628460638607. The next prime is 278628460638743. The reversal of 278628460638612 is 216836064826872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18634854793 + ... + 18634869744.

It is an arithmetic number, because the mean of its divisors is an integer number (15653284305960).

Almost surely, 2^{278628460638612} is an apocalyptic number.

It is an amenable number.

278628460638612 is an abundant number, since it is smaller than the sum of its proper divisors (472729186047468).

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

278628460638612 is a wasteful number, since it uses less digits than its factorization.

278628460638612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37269724640 (or 37269724638 counting only the distinct ones).

The product of its (nonzero) digits is 445906944, while the sum is 69.

The spelling of 278628460638612 in words is "two hundred seventy-eight trillion, six hundred twenty-eight billion, four hundred sixty million, six hundred thirty-eight thousand, six hundred twelve".