161238415703 has 4 divisors (see below), whose sum is σ = 165596210760. Its totient is φ = 156880620648.

The previous prime is 161238415693. The next prime is 161238415711. The reversal of 161238415703 is 307514832161.

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 161238415703 - 2⁴ = 161238415687 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 (161238415753) 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, 2178897473 + ... + 2178897546.

It is an arithmetic number, because the mean of its divisors is an integer number (41399052690).

Almost surely, 2^161238415703 is an apocalyptic number.

161238415703 is a deficient number, since it is larger than the sum of its proper divisors (4357795057).

161238415703 is an equidigital number, since it uses as much as digits as its factorization.

161238415703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357795056.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 161238415703 in words is "one hundred sixty-one billion, two hundred thirty-eight million, four hundred fifteen thousand, seven hundred three".