16040654161 has 12 divisors (see below), whose sum is σ = 18662001780. Its totient is φ = 13747315680.

The previous prime is 16040654159. The next prime is 16040654173. The reversal of 16040654161 is 16145604061.

It can be written as a sum of positive squares in 2 ways, for example, as 6031852225 + 10008801936 = 77665^2 + 100044^2 .

It is not a de Polignac number, because 16040654161 - 2¹ = 16040654159 is a prime.

It is a super-2 number, since 2×16040654161² (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 (16040654191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 462535 + ... + 496003.

It is an arithmetic number, because the mean of its divisors is an integer number (1555166815).

Almost surely, 2^16040654161 is an apocalyptic number.

It is an amenable number.

16040654161 is a deficient number, since it is larger than the sum of its proper divisors (2621347619).

16040654161 is an equidigital number, since it uses as much as digits as its factorization.

16040654161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43264 (or 43257 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 16040654161 in words is "sixteen billion, forty million, six hundred fifty-four thousand, one hundred sixty-one".