1389073698666 has 48 divisors (see below), whose sum is σ = 3012640076160. Its totient is φ = 462566253600.

The previous prime is 1389073698641. The next prime is 1389073698671. The reversal of 1389073698666 is 6668963709831.

It is a junction number, because it is equal to n+sod(n) for n = 1389073698594 and 1389073698603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122368891 + ... + 122380241.

It is an arithmetic number, because the mean of its divisors is an integer number (62763334920).

Almost surely, 2^{1389073698666} is an apocalyptic number.

1389073698666 is an abundant number, since it is smaller than the sum of its proper divisors (1623566377494).

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

1389073698666 is a wasteful number, since it uses less digits than its factorization.

1389073698666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17491 (or 17488 counting only the distinct ones).

The product of its (nonzero) digits is 423263232, while the sum is 72.

The spelling of 1389073698666 in words is "one trillion, three hundred eighty-nine billion, seventy-three million, six hundred ninety-eight thousand, six hundred sixty-six".