1389763523966 has 32 divisors (see below), whose sum is σ = 2200483065600. Its totient is φ = 656974359360.

The previous prime is 1389763523839. The next prime is 1389763524001. The reversal of 1389763523966 is 6693253679831.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1389763523896 and 1389763523905.

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, 12106145 + ... + 12220403.

It is an arithmetic number, because the mean of its divisors is an integer number (68765095800).

Almost surely, 2^{1389763523966} is an apocalyptic number.

1389763523966 is a deficient number, since it is larger than the sum of its proper divisors (810719541634).

1389763523966 is a wasteful number, since it uses less digits than its factorization.

1389763523966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117344.

The product of its digits is 264539520, while the sum is 68.

The spelling of 1389763523966 in words is "one trillion, three hundred eighty-nine billion, seven hundred sixty-three million, five hundred twenty-three thousand, nine hundred sixty-six".