10515201091 has 2 divisors, whose sum is σ = 10515201092. Its totient is φ = 10515201090.

The previous prime is 10515201083. The next prime is 10515201127. The reversal of 10515201091 is 19010251501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10515201091 - 2³ = 10515201083 is a prime.

It is a super-2 number, since 2×10515201091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10515201061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5257600545 + 5257600546.

It is an arithmetic number, because the mean of its divisors is an integer number (5257600546).

Almost surely, 2^10515201091 is an apocalyptic number.

10515201091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10515201091 is an equidigital number, since it uses as much as digits as its factorization.

10515201091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 25.

Adding to 10515201091 its reverse (19010251501), we get a palindrome (29525452592).

The spelling of 10515201091 in words is "ten billion, five hundred fifteen million, two hundred one thousand, ninety-one".