102623145517 has 4 divisors (see below), whose sum is σ = 102643435840. Its totient is φ = 102602855196.

The previous prime is 102623145511. The next prime is 102623145571. The reversal of 102623145517 is 715541326201.

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 not a de Polignac number, because 102623145517 - 2⁷ = 102623145389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102623145511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10137573 + ... + 10147690.

It is an arithmetic number, because the mean of its divisors is an integer number (25660858960).

Almost surely, 2^102623145517 is an apocalyptic number.

It is an amenable number.

102623145517 is a deficient number, since it is larger than the sum of its proper divisors (20290323).

102623145517 is an equidigital number, since it uses as much as digits as its factorization.

102623145517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20290322.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 102623145517 in words is "one hundred two billion, six hundred twenty-three million, one hundred forty-five thousand, five hundred seventeen".