16974048961 has 4 divisors (see below), whose sum is σ = 17003880900. Its totient is φ = 16944217024.

The previous prime is 16974048953. The next prime is 16974049003. The reversal of 16974048961 is 16984047961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16984047961 = 137 ⋅123971153.

It can be written as a sum of positive squares in 2 ways, for example, as 10399920400 + 6574128561 = 101980^2 + 81081^2 .

It is a cyclic number.

It is not a de Polignac number, because 16974048961 - 2³ = 16974048953 is a prime.

It is a super-3 number, since 3×16974048961³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16974048901) 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, 14915116 + ... + 14916253.

It is an arithmetic number, because the mean of its divisors is an integer number (4250970225).

Almost surely, 2^16974048961 is an apocalyptic number.

It is an amenable number.

16974048961 is a deficient number, since it is larger than the sum of its proper divisors (29831939).

16974048961 is an equidigital number, since it uses as much as digits as its factorization.

16974048961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29831938.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 16974048961 in words is "sixteen billion, nine hundred seventy-four million, forty-eight thousand, nine hundred sixty-one".