16537257249 has 16 divisors (see below), whose sum is σ = 22183761600. Its totient is φ = 10957965056.

The previous prime is 16537257227. The next prime is 16537257277. The reversal of 16537257249 is 94275273561.

It is a cyclic number.

It is not a de Polignac number, because 16537257249 - 2¹² = 16537253153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16537257049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376942 + ... + 418520.

It is an arithmetic number, because the mean of its divisors is an integer number (1386485100).

Almost surely, 2^16537257249 is an apocalyptic number.

It is an amenable number.

16537257249 is a deficient number, since it is larger than the sum of its proper divisors (5646504351).

16537257249 is a wasteful number, since it uses less digits than its factorization.

16537257249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42384.

The product of its digits is 3175200, while the sum is 51.

The spelling of 16537257249 in words is "sixteen billion, five hundred thirty-seven million, two hundred fifty-seven thousand, two hundred forty-nine".