16170676621 has 16 divisors (see below), whose sum is σ = 18059627520. Its totient is φ = 14351868720.

The previous prime is 16170676601. The next prime is 16170676637. The reversal of 16170676621 is 12667607161.

It is a cyclic number.

It is not a de Polignac number, because 16170676621 - 2²⁵ = 16137122189 is a prime.

It is a super-2 number, since 2×16170676621² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16170676601) 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 15 ways as a sum of consecutive naturals, for example, 1156156 + ... + 1170058.

It is an arithmetic number, because the mean of its divisors is an integer number (1128726720).

Almost surely, 2^16170676621 is an apocalyptic number.

16170676621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16170676621 is a deficient number, since it is larger than the sum of its proper divisors (1888950899).

16170676621 is a wasteful number, since it uses less digits than its factorization.

16170676621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16416.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 16170676621 in words is "sixteen billion, one hundred seventy million, six hundred seventy-six thousand, six hundred twenty-one".