2978558368688 has 20 divisors (see below), whose sum is σ = 6595379245200. Its totient is φ = 1276525015104.

The previous prime is 2978558368661. The next prime is 2978558368699. The reversal of 2978558368688 is 8868638558792.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13297135463 + ... + 13297135686.

It is an arithmetic number, because the mean of its divisors is an integer number (329768962260).

Almost surely, 2^{2978558368688} is an apocalyptic number.

2978558368688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2978558368688 is an abundant number, since it is smaller than the sum of its proper divisors (3616820876512).

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

2978558368688 is a wasteful number, since it uses less digits than its factorization.

2978558368688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26594271164 (or 26594271158 counting only the distinct ones).

The product of its digits is 11147673600, while the sum is 83.

The spelling of 2978558368688 in words is "two trillion, nine hundred seventy-eight billion, five hundred fifty-eight million, three hundred sixty-eight thousand, six hundred eighty-eight".