16946081397 has 24 divisors (see below), whose sum is σ = 28876889600. Its totient is φ = 9371103840.

The previous prime is 16946081387. The next prime is 16946081429. The reversal of 16946081397 is 79318064961.

16946081397 is a `hidden beast` number, since 16 + 9 + 4 + 608 + 13 + 9 + 7 = 666.

It is not a de Polignac number, because 16946081397 - 2¹² = 16946077301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16946081377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4336522 + ... + 4340427.

Almost surely, 2^16946081397 is an apocalyptic number.

It is an amenable number.

16946081397 is a deficient number, since it is larger than the sum of its proper divisors (11930808203).

16946081397 is a wasteful number, since it uses less digits than its factorization.

16946081397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8676993 (or 8676990 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 16946081397 in words is "sixteen billion, nine hundred forty-six million, eighty-one thousand, three hundred ninety-seven".