1228779982288 has 40 divisors (see below), whose sum is σ = 2389935600800. Its totient is φ = 612023796864.

The previous prime is 1228779982249. The next prime is 1228779982303. The reversal of 1228779982288 is 8822899778221.

It is a self number, because there is not a number n which added to its sum of digits gives 1228779982288.

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, 14715118 + ... + 14798386.

It is an arithmetic number, because the mean of its divisors is an integer number (59748390020).

Almost surely, 2^{1228779982288} is an apocalyptic number.

It is an amenable number.

1228779982288 is a deficient number, since it is larger than the sum of its proper divisors (1161155618512).

1228779982288 is a wasteful number, since it uses less digits than its factorization.

1228779982288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86819 (or 86813 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 73.

The spelling of 1228779982288 in words is "one trillion, two hundred twenty-eight billion, seven hundred seventy-nine million, nine hundred eighty-two thousand, two hundred eighty-eight".