16071779016407 has 4 divisors (see below), whose sum is σ = 17017177782096. Its totient is φ = 15126380250720.

The previous prime is 16071779016379. The next prime is 16071779016409. The reversal of 16071779016407 is 70461097717061.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16071779016407 - 2²⁶ = 16071711907543 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 (16071779016409) 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, 472699382819 + ... + 472699382852.

It is an arithmetic number, because the mean of its divisors is an integer number (4254294445524).

Almost surely, 2^{16071779016407} is an apocalyptic number.

16071779016407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16071779016407 is a deficient number, since it is larger than the sum of its proper divisors (945398765689).

16071779016407 is an equidigital number, since it uses as much as digits as its factorization.

16071779016407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945398765688.

The product of its (nonzero) digits is 3111696, while the sum is 56.

The spelling of 16071779016407 in words is "sixteen trillion, seventy-one billion, seven hundred seventy-nine million, sixteen thousand, four hundred seven".