16371467391889 has 45 divisors (see below), whose sum is σ = 17591266528615. Its totient is φ = 15235599068480.

The previous prime is 16371467391871. The next prime is 16371467391893. The reversal of 16371467391889 is 98819376417361.

The square root of 16371467391889 is 4046167.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 14767242495489 + 1604224896400 = 3842817^2 + 1266580^2 .

It is not a de Polignac number, because 16371467391889 - 2⁵ = 16371467391857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16371467391089) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 197246595042 + ... + 197246595124.

Almost surely, 2^{16371467391889} is an apocalyptic number.

16371467391889 is the 4046167-th square number.

16371467391889 is the 2023084-th centered octagonal number.

It is an amenable number.

16371467391889 is a deficient number, since it is larger than the sum of its proper divisors (1219799136726).

16371467391889 is an frugal number, since it uses more digits than its factorization.

16371467391889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 153 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 73.

The spelling of 16371467391889 in words is "sixteen trillion, three hundred seventy-one billion, four hundred sixty-seven million, three hundred ninety-one thousand, eight hundred eighty-nine".