1015352008721 has 2 divisors, whose sum is σ = 1015352008722. Its totient is φ = 1015352008720.

The previous prime is 1015352008667. The next prime is 1015352008777. The reversal of 1015352008721 is 1278002535101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 909248067025 + 106103941696 = 953545^2 + 325736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1015352008721 is a prime.

It is a super-2 number, since 2×1015352008721² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1015352008621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507676004360 + 507676004361.

It is an arithmetic number, because the mean of its divisors is an integer number (507676004361).

Almost surely, 2^{1015352008721} is an apocalyptic number.

It is an amenable number.

1015352008721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1015352008721 is an equidigital number, since it uses as much as digits as its factorization.

1015352008721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 1015352008721 in words is "one trillion, fifteen billion, three hundred fifty-two million, eight thousand, seven hundred twenty-one".