16105523401 has 4 divisors (see below), whose sum is σ = 17569661904. Its totient is φ = 14641384900.

The previous prime is 16105523387. The next prime is 16105523419. The reversal of 16105523401 is 10432550161.

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 16105523401 - 2⁹ = 16105522889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16105523401.

It is not an unprimeable number, because it can be changed into a prime (16105523471) 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, 732069235 + ... + 732069256.

It is an arithmetic number, because the mean of its divisors is an integer number (4392415476).

Almost surely, 2^16105523401 is an apocalyptic number.

16105523401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16105523401 is a deficient number, since it is larger than the sum of its proper divisors (1464138503).

16105523401 is a wasteful number, since it uses less digits than its factorization.

16105523401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464138502.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 16105523401 in words is "sixteen billion, one hundred five million, five hundred twenty-three thousand, four hundred one".