1310015665887 has 16 divisors (see below), whose sum is σ = 1790098597728. Its totient is φ = 851657515520.

The previous prime is 1310015665883. The next prime is 1310015665909. The reversal of 1310015665887 is 7885665100131.

It is a cyclic number.

It is not a de Polignac number, because 1310015665887 - 2² = 1310015665883 is a prime.

It is a super-2 number, since 2×1310015665887² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310015665883) 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 15 ways as a sum of consecutive naturals, for example, 2134158 + ... + 2678555.

It is an arithmetic number, because the mean of its divisors is an integer number (111881162358).

Almost surely, 2^{1310015665887} is an apocalyptic number.

1310015665887 is a deficient number, since it is larger than the sum of its proper divisors (480082931841).

1310015665887 is a wasteful number, since it uses less digits than its factorization.

1310015665887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814970.

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 1310015665887 in words is "one trillion, three hundred ten billion, fifteen million, six hundred sixty-five thousand, eight hundred eighty-seven".