16540411489 has 4 divisors (see below), whose sum is σ = 18903327424. Its totient is φ = 14177495556.

The previous prime is 16540411453. The next prime is 16540411501. The reversal of 16540411489 is 98411404561.

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 not a de Polignac number, because 16540411489 - 2⁹ = 16540410977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16540417489) 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, 1181457957 + ... + 1181457970.

It is an arithmetic number, because the mean of its divisors is an integer number (4725831856).

Almost surely, 2^16540411489 is an apocalyptic number.

It is an amenable number.

16540411489 is a deficient number, since it is larger than the sum of its proper divisors (2362915935).

16540411489 is an equidigital number, since it uses as much as digits as its factorization.

16540411489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362915934.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 16540411489 in words is "sixteen billion, five hundred forty million, four hundred eleven thousand, four hundred eighty-nine".