16400724265641 has 4 divisors (see below), whose sum is σ = 21867632354192. Its totient is φ = 10933816177092.

The previous prime is 16400724265637. The next prime is 16400724265657. The reversal of 16400724265641 is 14656242700461.

16400724265641 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 Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16400724265641 - 2² = 16400724265637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16400724265661) 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, 2733454044271 + ... + 2733454044276.

It is an arithmetic number, because the mean of its divisors is an integer number (5466908088548).

Almost surely, 2^{16400724265641} is an apocalyptic number.

It is an amenable number.

16400724265641 is a deficient number, since it is larger than the sum of its proper divisors (5466908088551).

16400724265641 is an equidigital number, since it uses as much as digits as its factorization.

16400724265641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5466908088550.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 16400724265641 in words is "sixteen trillion, four hundred billion, seven hundred twenty-four million, two hundred sixty-five thousand, six hundred forty-one".