161725144827 has 8 divisors (see below), whose sum is σ = 215745203520. Its totient is φ = 107760924680.

The previous prime is 161725144793. The next prime is 161725144879. The reversal of 161725144827 is 728441527161.

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 161725144827 - 2¹⁰ = 161725143803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161725144027) 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, 13952877 + ... + 13964462.

It is an arithmetic number, because the mean of its divisors is an integer number (26968150440).

Almost surely, 2^161725144827 is an apocalyptic number.

161725144827 is a deficient number, since it is larger than the sum of its proper divisors (54020058693).

161725144827 is a wasteful number, since it uses less digits than its factorization.

161725144827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27919273.

The product of its digits is 752640, while the sum is 48.

The spelling of 161725144827 in words is "one hundred sixty-one billion, seven hundred twenty-five million, one hundred forty-four thousand, eight hundred twenty-seven".