161026516103 has 4 divisors (see below), whose sum is σ = 161119974888. Its totient is φ = 160933057320.

The previous prime is 161026516099. The next prime is 161026516177. The reversal of 161026516103 is 301615620161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161026516103 - 2² = 161026516099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161026516103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161026516303) 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, 46726808 + ... + 46730253.

It is an arithmetic number, because the mean of its divisors is an integer number (40279993722).

Almost surely, 2^161026516103 is an apocalyptic number.

161026516103 is a deficient number, since it is larger than the sum of its proper divisors (93458785).

161026516103 is an equidigital number, since it uses as much as digits as its factorization.

161026516103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93458784.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 161026516103 in words is "one hundred sixty-one billion, twenty-six million, five hundred sixteen thousand, one hundred three".