16045450202021 has 4 divisors (see below), whose sum is σ = 16045607546112. Its totient is φ = 16045292857932.

The previous prime is 16045450201993. The next prime is 16045450202051. The reversal of 16045450202021 is 12020205454061.

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 16045450202021 - 2¹⁸ = 16045449939877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16045450202051) 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, 78518981 + ... + 78723066.

It is an arithmetic number, because the mean of its divisors is an integer number (4011401886528).

Almost surely, 2^{16045450202021} is an apocalyptic number.

It is an amenable number.

16045450202021 is a deficient number, since it is larger than the sum of its proper divisors (157344091).

16045450202021 is a wasteful number, since it uses less digits than its factorization.

16045450202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157344090.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 16045450202021 its reverse (12020205454061), we get a palindrome (28065655656082).

The spelling of 16045450202021 in words is "sixteen trillion, forty-five billion, four hundred fifty million, two hundred two thousand, twenty-one".