161748487823 has 8 divisors (see below), whose sum is σ = 175163814000. Its totient is φ = 148472180928.

The previous prime is 161748487819. The next prime is 161748487891. The reversal of 161748487823 is 328784847161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161748487823 - 2² = 161748487819 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 (161748487723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34752398 + ... + 34757051.

It is an arithmetic number, because the mean of its divisors is an integer number (21895476750).

Almost surely, 2^161748487823 is an apocalyptic number.

161748487823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161748487823 is a deficient number, since it is larger than the sum of its proper divisors (13415326177).

161748487823 is a wasteful number, since it uses less digits than its factorization.

161748487823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69509641.

The product of its digits is 14450688, while the sum is 59.

The spelling of 161748487823 in words is "one hundred sixty-one billion, seven hundred forty-eight million, four hundred eighty-seven thousand, eight hundred twenty-three".