102253328491 has 4 divisors (see below), whose sum is σ = 102253996000. Its totient is φ = 102252660984.

The previous prime is 102253328473. The next prime is 102253328533. The reversal of 102253328491 is 194823352201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 194823352201 = 9157 ⋅21275893.

It is a cyclic number.

It is not a de Polignac number, because 102253328491 - 2²¹ = 102251231339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102253328431) 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 in 3 ways as a sum of consecutive naturals, for example, 23485 + ... + 452833.

It is an arithmetic number, because the mean of its divisors is an integer number (25563499000).

Almost surely, 2^102253328491 is an apocalyptic number.

102253328491 is a deficient number, since it is larger than the sum of its proper divisors (667509).

102253328491 is an equidigital number, since it uses as much as digits as its factorization.

102253328491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667508.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 102253328491 in words is "one hundred two billion, two hundred fifty-three million, three hundred twenty-eight thousand, four hundred ninety-one".