16977511389 has 8 divisors (see below), whose sum is σ = 23828086240. Its totient is φ = 10722638736.

The previous prime is 16977511361. The next prime is 16977511451. The reversal of 16977511389 is 98311577961.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16977511389 - 2⁵ = 16977511357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 297851077 = 16977511389 / (1 + 6 + 9 + 7 + 7 + 5 + 1 + 1 + 3 + 8 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16977511339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148925482 + ... + 148925595.

It is an arithmetic number, because the mean of its divisors is an integer number (2978510780).

Almost surely, 2^16977511389 is an apocalyptic number.

16977511389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16977511389 is a deficient number, since it is larger than the sum of its proper divisors (6850574851).

16977511389 is a wasteful number, since it uses less digits than its factorization.

16977511389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297851099.

The product of its digits is 2857680, while the sum is 57.

The spelling of 16977511389 in words is "sixteen billion, nine hundred seventy-seven million, five hundred eleven thousand, three hundred eighty-nine".