1389768078220 has 48 divisors (see below), whose sum is σ = 3026756759040. Its totient is φ = 535385942784.

The previous prime is 1389768078211. The next prime is 1389768078247. The reversal of 1389768078220 is 228708679831.

It is a super-2 number, since 2×1389768078220² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2787564 + ... + 3248083.

It is an arithmetic number, because the mean of its divisors is an integer number (63057432480).

Almost surely, 2^{1389768078220} is an apocalyptic number.

1389768078220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389768078220 is an abundant number, since it is smaller than the sum of its proper divisors (1636988680820).

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

1389768078220 is a wasteful number, since it uses less digits than its factorization.

1389768078220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6036082 (or 6036080 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 1389768078220 in words is "one trillion, three hundred eighty-nine billion, seven hundred sixty-eight million, seventy-eight thousand, two hundred twenty".