165201355124 has 48 divisors (see below), whose sum is σ = 329970707136. Its totient is φ = 71692992000.

The previous prime is 165201355069. The next prime is 165201355147. The reversal of 165201355124 is 421553102561.

It is a super-2 number, since 2×165201355124² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840179 + ... + 1017989.

It is an arithmetic number, because the mean of its divisors is an integer number (6874389732).

Almost surely, 2^165201355124 is an apocalyptic number.

It is an amenable number.

165201355124 is a deficient number, since it is larger than the sum of its proper divisors (164769352012).

165201355124 is a wasteful number, since it uses less digits than its factorization.

165201355124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178896 (or 178894 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 165201355124 its reverse (421553102561), we get a palindrome (586754457685).

The spelling of 165201355124 in words is "one hundred sixty-five billion, two hundred one million, three hundred fifty-five thousand, one hundred twenty-four".