161210015 has 8 divisors (see below), whose sum is σ = 193781808. Its totient is φ = 128748160.

The previous prime is 161210011. The next prime is 161210017. The reversal of 161210015 is 510012161.

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

It is not a de Polignac number, because 161210015 - 2² = 161210011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161209975 and 161210002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161210011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24221 + ... + 30150.

It is an arithmetic number, because the mean of its divisors is an integer number (24222726).

Almost surely, 2^161210015 is an apocalyptic number.

161210015 is a deficient number, since it is larger than the sum of its proper divisors (32571793).

161210015 is an equidigital number, since it uses as much as digits as its factorization.

161210015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54969.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 161210015 is about 12696.8505937496. The cubic root of 161210015 is about 544.2486236941.

Adding to 161210015 its reverse (510012161), we get a palindrome (671222176).

The spelling of 161210015 in words is "one hundred sixty-one million, two hundred ten thousand, fifteen".