16730421399 has 32 divisors (see below), whose sum is σ = 24875331840. Its totient is φ = 11113423776.

The previous prime is 16730421391. The next prime is 16730421457. The reversal of 16730421399 is 99312403761.

16730421399 is a `hidden beast` number, since 167 + 30 + 421 + 39 + 9 = 666.

It is not a de Polignac number, because 16730421399 - 2³ = 16730421391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16730421391) 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, 14384992 + ... + 14386154.

It is an arithmetic number, because the mean of its divisors is an integer number (777354120).

Almost surely, 2^16730421399 is an apocalyptic number.

16730421399 is a deficient number, since it is larger than the sum of its proper divisors (8144910441).

16730421399 is a wasteful number, since it uses less digits than its factorization.

16730421399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636 (or 2630 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 16730421399 in words is "sixteen billion, seven hundred thirty million, four hundred twenty-one thousand, three hundred ninety-nine".