161484157217 has 8 divisors (see below), whose sum is σ = 163463114016. Its totient is φ = 159513899872.

The previous prime is 161484157201. The next prime is 161484157277. The reversal of 161484157217 is 712751484161.

It is a happy number.

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 161484157217 - 2⁴ = 161484157201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161484157277) 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, 2137508 + ... + 2211765.

It is an arithmetic number, because the mean of its divisors is an integer number (20432889252).

Almost surely, 2^161484157217 is an apocalyptic number.

It is an amenable number.

161484157217 is a deficient number, since it is larger than the sum of its proper divisors (1978956799).

161484157217 is a wasteful number, since it uses less digits than its factorization.

161484157217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349727.

The product of its digits is 376320, while the sum is 47.

The spelling of 161484157217 in words is "one hundred sixty-one billion, four hundred eighty-four million, one hundred fifty-seven thousand, two hundred seventeen".