161532056723 has 8 divisors (see below), whose sum is σ = 168584325408. Its totient is φ = 154482216064.

The previous prime is 161532056711. The next prime is 161532056827. The reversal of 161532056723 is 327650235161.

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 161532056723 - 2¹⁴ = 161532040339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161532056123) 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, 470390 + ... + 737787.

It is an arithmetic number, because the mean of its divisors is an integer number (21073040676).

Almost surely, 2^161532056723 is an apocalyptic number.

161532056723 is a deficient number, since it is larger than the sum of its proper divisors (7052268685).

161532056723 is a wasteful number, since it uses less digits than its factorization.

161532056723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214013.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 161532056723 in words is "one hundred sixty-one billion, five hundred thirty-two million, fifty-six thousand, seven hundred twenty-three".