16956000181 has 4 divisors (see below), whose sum is σ = 16956396864. Its totient is φ = 16955603500.

The previous prime is 16956000151. The next prime is 16956000233. The reversal of 16956000181 is 18100065961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16956000181 - 2¹⁹ = 16955475893 is a prime.

It is a super-2 number, since 2×16956000181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16956000181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16956000151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125245 + ... + 222706.

It is an arithmetic number, because the mean of its divisors is an integer number (4239099216).

Almost surely, 2^16956000181 is an apocalyptic number.

It is an amenable number.

16956000181 is a deficient number, since it is larger than the sum of its proper divisors (396683).

16956000181 is an equidigital number, since it uses as much as digits as its factorization.

16956000181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396682.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 16956000181 in words is "sixteen billion, nine hundred fifty-six million, one hundred eighty-one", and thus it is an aban number.