1015660104001 has 4 divisors (see below), whose sum is σ = 1016628322500. Its totient is φ = 1014691885504.

The previous prime is 1015660103989. The next prime is 1015660104013. The reversal of 1015660104001 is 1004010665101.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1015660103989) and next prime (1015660104013).

It can be written as a sum of positive squares in 2 ways, for example, as 768119027776 + 247541076225 = 876424^2 + 497535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1015660104001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015660104091) 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 3 ways as a sum of consecutive naturals, for example, 484107676 + ... + 484109773.

It is an arithmetic number, because the mean of its divisors is an integer number (254157080625).

Almost surely, 2^{1015660104001} is an apocalyptic number.

It is an amenable number.

1015660104001 is a deficient number, since it is larger than the sum of its proper divisors (968218499).

1015660104001 is an equidigital number, since it uses as much as digits as its factorization.

1015660104001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968218498.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 1015660104001 its reverse (1004010665101), we get a palindrome (2019670769102).

The spelling of 1015660104001 in words is "one trillion, fifteen billion, six hundred sixty million, one hundred four thousand, one".