16021435545 has 96 divisors (see below), whose sum is σ = 30132311040. Its totient is φ = 7845089280.

The previous prime is 16021435541. The next prime is 16021435637. The reversal of 16021435545 is 54553412061.

16021435545 is a `hidden beast` number, since 1 + 60 + 2 + 1 + 43 + 554 + 5 = 666.

It is not a de Polignac number, because 16021435545 - 2² = 16021435541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16021435541) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6182200 + ... + 6184790.

It is an arithmetic number, because the mean of its divisors is an integer number (313878240).

Almost surely, 2^16021435545 is an apocalyptic number.

16021435545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16021435545 is a deficient number, since it is larger than the sum of its proper divisors (14110875495).

16021435545 is a wasteful number, since it uses less digits than its factorization.

16021435545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 16021435545 in words is "sixteen billion, twenty-one million, four hundred thirty-five thousand, five hundred forty-five".