16277148477789 has 4 divisors (see below), whose sum is σ = 21702864637056. Its totient is φ = 10851432318524.

The previous prime is 16277148477619. The next prime is 16277148477809. The reversal of 16277148477789 is 98777484177261.

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 a cyclic number.

It is not a de Polignac number, because 16277148477789 - 2⁸ = 16277148477533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16277148477089) 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, 2712858079629 + ... + 2712858079634.

It is an arithmetic number, because the mean of its divisors is an integer number (5425716159264).

Almost surely, 2^{16277148477789} is an apocalyptic number.

It is an amenable number.

16277148477789 is a deficient number, since it is larger than the sum of its proper divisors (5425716159267).

16277148477789 is an equidigital number, since it uses as much as digits as its factorization.

16277148477789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5425716159266.

The product of its digits is 1858719744, while the sum is 78.

The spelling of 16277148477789 in words is "sixteen trillion, two hundred seventy-seven billion, one hundred forty-eight million, four hundred seventy-seven thousand, seven hundred eighty-nine".