16719939756005 has 32 divisors (see below), whose sum is σ = 21813614419968. Its totient is φ = 12265949678400.

The previous prime is 16719939756001. The next prime is 16719939756041. The reversal of 16719939756005 is 50065793991761.

It is not a de Polignac number, because 16719939756005 - 2² = 16719939756001 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 (16719939756001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21534551 + ... + 22297460.

It is an arithmetic number, because the mean of its divisors is an integer number (681675450624).

Almost surely, 2^{16719939756005} is an apocalyptic number.

It is an amenable number.

16719939756005 is a deficient number, since it is larger than the sum of its proper divisors (5093674663963).

16719939756005 is a wasteful number, since it uses less digits than its factorization.

16719939756005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43832177.

The product of its (nonzero) digits is 96446700, while the sum is 68.

The spelling of 16719939756005 in words is "sixteen trillion, seven hundred nineteen billion, nine hundred thirty-nine million, seven hundred fifty-six thousand, five".