1320866972508 has 24 divisors (see below), whose sum is σ = 3082046625280. Its totient is φ = 440285606640.

The previous prime is 1320866972483. The next prime is 1320866972521. The reversal of 1320866972508 is 8052796680231.

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, 1584213 + ... + 2269683.

Almost surely, 2^{1320866972508} is an apocalyptic number.

It is an amenable number.

1320866972508 is an abundant number, since it is smaller than the sum of its proper divisors (1761179652772).

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

1320866972508 is a wasteful number, since it uses less digits than its factorization.

1320866972508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846057 (or 846055 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 1320866972508 in words is "one trillion, three hundred twenty billion, eight hundred sixty-six million, nine hundred seventy-two thousand, five hundred eight".