16780141449 has 12 divisors (see below), whose sum is σ = 24275685616. Its totient is φ = 11169359352.

The previous prime is 16780141447. The next prime is 16780141471. The reversal of 16780141449 is 94414108761.

16780141449 is a `hidden beast` number, since 1 + 67 + 8 + 0 + 141 + 449 = 666.

It is not a de Polignac number, because 16780141449 - 2¹ = 16780141447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16780141447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1444027 + ... + 1455600.

Almost surely, 2^16780141449 is an apocalyptic number.

It is an amenable number.

16780141449 is a deficient number, since it is larger than the sum of its proper divisors (7495544167).

16780141449 is a wasteful number, since it uses less digits than its factorization.

16780141449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900276 (or 2900273 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 16780141449 in words is "sixteen billion, seven hundred eighty million, one hundred forty-one thousand, four hundred forty-nine".