6515610665145 has 32 divisors (see below), whose sum is σ = 10551022820352. Its totient is φ = 3432980624832.

The previous prime is 6515610665119. The next prime is 6515610665171. The reversal of 6515610665145 is 5415660165156.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6515610665119) and next prime (6515610665171).

It is not a de Polignac number, because 6515610665145 - 2¹³ = 6515610656953 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 33676654 + ... + 33869576.

It is an arithmetic number, because the mean of its divisors is an integer number (329719463136).

Almost surely, 2^{6515610665145} is an apocalyptic number.

It is an amenable number.

6515610665145 is a deficient number, since it is larger than the sum of its proper divisors (4035412155207).

6515610665145 is a wasteful number, since it uses less digits than its factorization.

6515610665145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220141.

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 6515610665145 in words is "six trillion, five hundred fifteen billion, six hundred ten million, six hundred sixty-five thousand, one hundred forty-five".