16255640401 has 32 divisors (see below), whose sum is σ = 21919742208. Its totient is φ = 11642019840.

The previous prime is 16255640381. The next prime is 16255640413. The reversal of 16255640401 is 10404655261.

16255640401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16255640401 - 2¹³ = 16255632209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16255640801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198385 + ... + 268081.

It is an arithmetic number, because the mean of its divisors is an integer number (684991944).

Almost surely, 2^16255640401 is an apocalyptic number.

16255640401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16255640401 is a deficient number, since it is larger than the sum of its proper divisors (5664101807).

16255640401 is a wasteful number, since it uses less digits than its factorization.

16255640401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69961.

The product of its (nonzero) digits is 28800, while the sum is 34.

It can be divided in two parts, 16255 and 640401, that added together give a palindrome (656656).

The spelling of 16255640401 in words is "sixteen billion, two hundred fifty-five million, six hundred forty thousand, four hundred one".