165156142403 has 32 divisors (see below), whose sum is σ = 197262912000. Its totient is φ = 135348869376.

The previous prime is 165156142373. The next prime is 165156142423. The reversal of 165156142403 is 304241651561.

It is not a de Polignac number, because 165156142403 - 2⁸ = 165156142147 is a prime.

It is a super-2 number, since 2×165156142403² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165156142423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2692823 + ... + 2753471.

It is an arithmetic number, because the mean of its divisors is an integer number (6164466000).

Almost surely, 2^165156142403 is an apocalyptic number.

165156142403 is a deficient number, since it is larger than the sum of its proper divisors (32106769597).

165156142403 is a wasteful number, since it uses less digits than its factorization.

165156142403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60891.

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 165156142403 its reverse (304241651561), we get a palindrome (469397793964).

The spelling of 165156142403 in words is "one hundred sixty-five billion, one hundred fifty-six million, one hundred forty-two thousand, four hundred three".