16145521053539 has 2 divisors, whose sum is σ = 16145521053540. Its totient is φ = 16145521053538.

The previous prime is 16145521053491. The next prime is 16145521053587. The reversal of 16145521053539 is 93535012554161.

16145521053539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (16145521053491) and next prime (16145521053587).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16145521053539 is a prime.

It is a super-2 number, since 2×16145521053539² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16145521053139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8072760526769 + 8072760526770.

It is an arithmetic number, because the mean of its divisors is an integer number (8072760526770).

Almost surely, 2^{16145521053539} is an apocalyptic number.

16145521053539 is a deficient number, since it is larger than the sum of its proper divisors (1).

16145521053539 is an equidigital number, since it uses as much as digits as its factorization.

16145521053539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430000, while the sum is 50.

The spelling of 16145521053539 in words is "sixteen trillion, one hundred forty-five billion, five hundred twenty-one million, fifty-three thousand, five hundred thirty-nine".