100145258817 has 4 divisors (see below), whose sum is σ = 133527011760. Its totient is φ = 66763505876.

The previous prime is 100145258797. The next prime is 100145258821. The reversal of 100145258817 is 718852541001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100145258817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100145258897) 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 in 3 ways as a sum of consecutive naturals, for example, 16690876467 + ... + 16690876472.

It is an arithmetic number, because the mean of its divisors is an integer number (33381752940).

Almost surely, 2^100145258817 is an apocalyptic number.

It is an amenable number.

100145258817 is a deficient number, since it is larger than the sum of its proper divisors (33381752943).

100145258817 is an equidigital number, since it uses as much as digits as its factorization.

100145258817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33381752942.

The product of its (nonzero) digits is 89600, while the sum is 42.

Adding to 100145258817 its reverse (718852541001), we get a palindrome (818997799818).

The spelling of 100145258817 in words is "one hundred billion, one hundred forty-five million, two hundred fifty-eight thousand, eight hundred seventeen".