16158696973 has 4 divisors (see below), whose sum is σ = 16164931228. Its totient is φ = 16152462720.

The previous prime is 16158696947. The next prime is 16158697007. The reversal of 16158696973 is 37969685161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37969685161 = 81233 ⋅467417.

It can be written as a sum of positive squares in 2 ways, for example, as 10309965444 + 5848731529 = 101538^2 + 76477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16158696973 is a prime.

It is a super-2 number, since 2×16158696973² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16158696923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3113238 + ... + 3118423.

It is an arithmetic number, because the mean of its divisors is an integer number (4041232807).

Almost surely, 2^16158696973 is an apocalyptic number.

It is an amenable number.

16158696973 is a deficient number, since it is larger than the sum of its proper divisors (6234255).

16158696973 is an equidigital number, since it uses as much as digits as its factorization.

16158696973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6234254.

The product of its digits is 14696640, while the sum is 61.

The spelling of 16158696973 in words is "sixteen billion, one hundred fifty-eight million, six hundred ninety-six thousand, nine hundred seventy-three".