16145239547 has 4 divisors (see below), whose sum is σ = 16145811840. Its totient is φ = 16144667256.

The previous prime is 16145239447. The next prime is 16145239573. The reversal of 16145239547 is 74593254161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16145239547 - 2¹⁸ = 16144977403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16145239147) 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, 241508 + ... + 301025.

It is an arithmetic number, because the mean of its divisors is an integer number (4036452960).

Almost surely, 2^16145239547 is an apocalyptic number.

16145239547 is a deficient number, since it is larger than the sum of its proper divisors (572293).

16145239547 is an equidigital number, since it uses as much as digits as its factorization.

16145239547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572292.

The product of its digits is 907200, while the sum is 47.

The spelling of 16145239547 in words is "sixteen billion, one hundred forty-five million, two hundred thirty-nine thousand, five hundred forty-seven".