16005423455 has 24 divisors (see below), whose sum is σ = 22512861360. Its totient is φ = 10891345920.

The previous prime is 16005423443. The next prime is 16005423457. The reversal of 16005423455 is 55432450061.

It is not a de Polignac number, because 16005423455 - 2⁸ = 16005423199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16005423457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217250 + ... + 281439.

It is an arithmetic number, because the mean of its divisors is an integer number (938035890).

Almost surely, 2^16005423455 is an apocalyptic number.

16005423455 is a deficient number, since it is larger than the sum of its proper divisors (6507437905).

16005423455 is a wasteful number, since it uses less digits than its factorization.

16005423455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498839 (or 498832 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 16005423455 in words is "sixteen billion, five million, four hundred twenty-three thousand, four hundred fifty-five".