13768031515 has 12 divisors (see below), whose sum is σ = 19219048416. Its totient is φ = 9440935728.

The previous prime is 13768031491. The next prime is 13768031539. The reversal of 13768031515 is 51513086731.

It is an interprime number because it is at equal distance from previous prime (13768031491) and next prime (13768031539).

It is not a de Polignac number, because 13768031515 - 2⁹ = 13768031003 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 28097779 + ... + 28098268.

It is an arithmetic number, because the mean of its divisors is an integer number (1601587368).

Almost surely, 2^13768031515 is an apocalyptic number.

13768031515 is a deficient number, since it is larger than the sum of its proper divisors (5451016901).

13768031515 is an equidigital number, since it uses as much as digits as its factorization.

13768031515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56196066 (or 56196059 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 13768031515 in words is "thirteen billion, seven hundred sixty-eight million, thirty-one thousand, five hundred fifteen".