165401732215 has 8 divisors (see below), whose sum is σ = 198546476688. Its totient is φ = 132278453760.

The previous prime is 165401732183. The next prime is 165401732239. The reversal of 165401732215 is 512237104561.

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

It is not a de Polignac number, because 165401732215 - 2⁵ = 165401732183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5349546 + ... + 5380375.

It is an arithmetic number, because the mean of its divisors is an integer number (24818309586).

Almost surely, 2^165401732215 is an apocalyptic number.

165401732215 is a deficient number, since it is larger than the sum of its proper divisors (33144744473).

165401732215 is a wasteful number, since it uses less digits than its factorization.

165401732215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10733009.

The product of its (nonzero) digits is 50400, while the sum is 37.

Adding to 165401732215 its reverse (512237104561), we get a palindrome (677638836776).

The spelling of 165401732215 in words is "one hundred sixty-five billion, four hundred one million, seven hundred thirty-two thousand, two hundred fifteen".