16736509673 has 16 divisors (see below), whose sum is σ = 19549642896. Its totient is φ = 14185666560.

The previous prime is 16736509649. The next prime is 16736509693. The reversal of 16736509673 is 37690563761.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4064955049 + 12671554624 = 63757^2 + 112568^2 .

It is not a de Polignac number, because 16736509673 - 2¹⁸ = 16736247529 is a prime.

It is a super-2 number, since 2×16736509673² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16736509693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 914486 + ... + 932607.

It is an arithmetic number, because the mean of its divisors is an integer number (1221852681).

Almost surely, 2^16736509673 is an apocalyptic number.

16736509673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16736509673 is a deficient number, since it is larger than the sum of its proper divisors (2813133223).

16736509673 is a wasteful number, since it uses less digits than its factorization.

16736509673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847164.

The product of its (nonzero) digits is 4286520, while the sum is 53.

The spelling of 16736509673 in words is "sixteen billion, seven hundred thirty-six million, five hundred nine thousand, six hundred seventy-three".