16161101641 has 4 divisors (see below), whose sum is σ = 16177746384. Its totient is φ = 16144456900.

The previous prime is 16161101611. The next prime is 16161101657. The reversal of 16161101641 is 14610116161.

It is a happy number.

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 16161101641 - 2¹¹ = 16161099593 is a prime.

It is a super-2 number, since 2×16161101641² (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 (16161101611) 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, 8320915 + ... + 8322856.

It is an arithmetic number, because the mean of its divisors is an integer number (4044436596).

Almost surely, 2^16161101641 is an apocalyptic number.

It is an amenable number.

16161101641 is a deficient number, since it is larger than the sum of its proper divisors (16644743).

16161101641 is an equidigital number, since it uses as much as digits as its factorization.

16161101641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16644742.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 16161101641 in words is "sixteen billion, one hundred sixty-one million, one hundred one thousand, six hundred forty-one".