16502397123 has 8 divisors (see below), whose sum is σ = 23161259200. Its totient is φ = 10422566568.

The previous prime is 16502397089. The next prime is 16502397127. The reversal of 16502397123 is 32179320561.

It is a happy number.

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

It is not a de Polignac number, because 16502397123 - 2¹⁷ = 16502266051 is a prime.

It is a super-2 number, since 2×16502397123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16502397127) 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, 144757813 + ... + 144757926.

It is an arithmetic number, because the mean of its divisors is an integer number (2895157400).

Almost surely, 2^16502397123 is an apocalyptic number.

16502397123 is a deficient number, since it is larger than the sum of its proper divisors (6658862077).

16502397123 is a wasteful number, since it uses less digits than its factorization.

16502397123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289515761.

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 16502397123 in words is "sixteen billion, five hundred two million, three hundred ninety-seven thousand, one hundred twenty-three".