1320870186156 has 24 divisors (see below), whose sum is σ = 3086838612144. Its totient is φ = 439603179520.

The previous prime is 1320870186137. The next prime is 1320870186203. The reversal of 1320870186156 is 6516810780231.

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 7 ways as a sum of consecutive naturals, for example, 85852305 + ... + 85867688.

It is an arithmetic number, because the mean of its divisors is an integer number (128618275506).

Almost surely, 2^{1320870186156} is an apocalyptic number.

It is an amenable number.

1320870186156 is an abundant number, since it is smaller than the sum of its proper divisors (1765968425988).

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

1320870186156 is a wasteful number, since it uses less digits than its factorization.

1320870186156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171720641 (or 171720639 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 1320870186156 in words is "one trillion, three hundred twenty billion, eight hundred seventy million, one hundred eighty-six thousand, one hundred fifty-six".