16946940247 has 4 divisors (see below), whose sum is σ = 17683763760. Its totient is φ = 16210116736.

The previous prime is 16946940203. The next prime is 16946940277. The reversal of 16946940247 is 74204964961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16946940247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16946940194 and 16946940203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16946940277) 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, 368411722 + ... + 368411767.

It is an arithmetic number, because the mean of its divisors is an integer number (4420940940).

Almost surely, 2^16946940247 is an apocalyptic number.

16946940247 is a deficient number, since it is larger than the sum of its proper divisors (736823513).

16946940247 is an equidigital number, since it uses as much as digits as its factorization.

16946940247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736823512.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 16946940247 in words is "sixteen billion, nine hundred forty-six million, nine hundred forty thousand, two hundred forty-seven".