1320513913187 has 64 divisors (see below), whose sum is σ = 1713979238400. Its totient is φ = 990234408960.

The previous prime is 1320513913133. The next prime is 1320513913207. The reversal of 1320513913187 is 7813193150231.

It is a de Polignac number, because none of the positive numbers 2^k-1320513913187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320513913987) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 25358237 + ... + 25410257.

It is an arithmetic number, because the mean of its divisors is an integer number (26780925600).

Almost surely, 2^{1320513913187} is an apocalyptic number.

1320513913187 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1320513913187 is a deficient number, since it is larger than the sum of its proper divisors (393465325213).

1320513913187 is a wasteful number, since it uses less digits than its factorization.

1320513913187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52276.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 1320513913187 in words is "one trillion, three hundred twenty billion, five hundred thirteen million, nine hundred thirteen thousand, one hundred eighty-seven".