1015304040191 has 4 divisors (see below), whose sum is σ = 1160347474512. Its totient is φ = 870260605872.

The previous prime is 1015304040167. The next prime is 1015304040197. The reversal of 1015304040191 is 1910404035101.

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

It is a de Polignac number, because none of the positive numbers 2^k-1015304040191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015304040197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72521717150 + ... + 72521717163.

It is an arithmetic number, because the mean of its divisors is an integer number (290086868628).

Almost surely, 2^{1015304040191} is an apocalyptic number.

1015304040191 is a deficient number, since it is larger than the sum of its proper divisors (145043434321).

1015304040191 is an equidigital number, since it uses as much as digits as its factorization.

1015304040191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145043434320.

The product of its (nonzero) digits is 2160, while the sum is 29.

Adding to 1015304040191 its reverse (1910404035101), we get a palindrome (2925708075292).

The spelling of 1015304040191 in words is "one trillion, fifteen billion, three hundred four million, forty thousand, one hundred ninety-one".