16617863847 has 32 divisors (see below), whose sum is σ = 25172421120. Its totient is φ = 9666933120.

The previous prime is 16617863833. The next prime is 16617863869. The reversal of 16617863847 is 74836871661.

It is not a de Polignac number, because 16617863847 - 2⁷ = 16617863719 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16617863447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317278 + ... + 365924.

It is an arithmetic number, because the mean of its divisors is an integer number (786638160).

Almost surely, 2^16617863847 is an apocalyptic number.

16617863847 is a deficient number, since it is larger than the sum of its proper divisors (8554557273).

16617863847 is a wasteful number, since it uses less digits than its factorization.

16617863847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49143.

The product of its digits is 8128512, while the sum is 57.

The spelling of 16617863847 in words is "sixteen billion, six hundred seventeen million, eight hundred sixty-three thousand, eight hundred forty-seven".