1015452220691 has 2 divisors, whose sum is σ = 1015452220692. Its totient is φ = 1015452220690.

The previous prime is 1015452220649. The next prime is 1015452220697. The reversal of 1015452220691 is 1960222545101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1015452220691 - 2³⁸ = 740574313747 is a prime.

It is a super-2 number, since 2×1015452220691² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1015452220697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507726110345 + 507726110346.

It is an arithmetic number, because the mean of its divisors is an integer number (507726110346).

Almost surely, 2^{1015452220691} is an apocalyptic number.

1015452220691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1015452220691 is an equidigital number, since it uses as much as digits as its factorization.

1015452220691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

Adding to 1015452220691 its reverse (1960222545101), we get a palindrome (2975674765792).

The spelling of 1015452220691 in words is "one trillion, fifteen billion, four hundred fifty-two million, two hundred twenty thousand, six hundred ninety-one".