16377954278399 has 8 divisors (see below), whose sum is σ = 18717691674240. Its totient is φ = 14038224293016.

The previous prime is 16377954278351. The next prime is 16377954278401. The reversal of 16377954278399 is 99387245977361.

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

It is not a de Polignac number, because 16377954278399 - 2¹⁶ = 16377954212863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16377953278399) 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, 4202912 + ... + 7100730.

It is an arithmetic number, because the mean of its divisors is an integer number (2339711459280).

Almost surely, 2^{16377954278399} is an apocalyptic number.

16377954278399 is a deficient number, since it is larger than the sum of its proper divisors (2339737395841).

16377954278399 is an equidigital number, since it uses as much as digits as its factorization.

16377954278399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705229.

The product of its digits is 4320812160, while the sum is 80.

The spelling of 16377954278399 in words is "sixteen trillion, three hundred seventy-seven billion, nine hundred fifty-four million, two hundred seventy-eight thousand, three hundred ninety-nine".