16040294350081 has 4 divisors (see below), whose sum is σ = 16040304717892. Its totient is φ = 16040283982272.

The previous prime is 16040294350049. The next prime is 16040294350123. The reversal of 16040294350081 is 18005349204061.

16040294350081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 50220810000 + 15990073540081 = 224100^2 + 3998759^2 .

It is a cyclic number.

It is not a de Polignac number, because 16040294350081 - 2⁵ = 16040294350049 is a prime.

It is a super-2 number, since 2×16040294350081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16040294350001) 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, 2344980 + ... + 6130213.

It is an arithmetic number, because the mean of its divisors is an integer number (4010076179473).

Almost surely, 2^{16040294350081} is an apocalyptic number.

It is an amenable number.

16040294350081 is a deficient number, since it is larger than the sum of its proper divisors (10367811).

16040294350081 is an equidigital number, since it uses as much as digits as its factorization.

16040294350081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10367810.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 16040294350081 in words is "sixteen trillion, forty billion, two hundred ninety-four million, three hundred fifty thousand, eighty-one".