16491274941 has 32 divisors (see below), whose sum is σ = 23959756800. Its totient is φ = 10051093440.

The previous prime is 16491274931. The next prime is 16491274967. The reversal of 16491274941 is 14947219461.

It is a happy number.

It is not a de Polignac number, because 16491274941 - 2¹⁷ = 16491143869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16491274931) 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, 621355 + ... + 647351.

It is an arithmetic number, because the mean of its divisors is an integer number (748742400).

Almost surely, 2^16491274941 is an apocalyptic number.

It is an amenable number.

16491274941 is a deficient number, since it is larger than the sum of its proper divisors (7468481859).

16491274941 is a wasteful number, since it uses less digits than its factorization.

16491274941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26409.

The product of its digits is 435456, while the sum is 48.

The spelling of 16491274941 in words is "sixteen billion, four hundred ninety-one million, two hundred seventy-four thousand, nine hundred forty-one".