16297675491 has 16 divisors (see below), whose sum is σ = 22202049024. Its totient is φ = 10629406944.

The previous prime is 16297675463. The next prime is 16297675591. The reversal of 16297675491 is 19457679261.

It is a happy number.

It is not a de Polignac number, because 16297675491 - 2¹¹ = 16297673443 is a prime.

It is a super-2 number, since 2×16297675491² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16297675421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324421 + ... + 371273.

It is an arithmetic number, because the mean of its divisors is an integer number (1387628064).

Almost surely, 2^16297675491 is an apocalyptic number.

16297675491 is a deficient number, since it is larger than the sum of its proper divisors (5904373533).

16297675491 is a wasteful number, since it uses less digits than its factorization.

16297675491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49370.

The product of its digits is 5715360, while the sum is 57.

The spelling of 16297675491 in words is "sixteen billion, two hundred ninety-seven million, six hundred seventy-five thousand, four hundred ninety-one".