16072691794645 has 8 divisors (see below), whose sum is σ = 19302822101304. Its totient is φ = 12847758803904.

The previous prime is 16072691794613. The next prime is 16072691794661. The reversal of 16072691794645 is 54649719627061.

It can be written as a sum of positive squares in 4 ways, for example, as 1888903891876 + 14183787902769 = 1374374^2 + 3766137^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16072691794645 - 2⁵ = 16072691794613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299322174 + ... + 1299334543.

It is an arithmetic number, because the mean of its divisors is an integer number (2412852762663).

Almost surely, 2^{16072691794645} is an apocalyptic number.

It is an amenable number.

16072691794645 is a deficient number, since it is larger than the sum of its proper divisors (3230130306659).

16072691794645 is a wasteful number, since it uses less digits than its factorization.

16072691794645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598657959.

The product of its (nonzero) digits is 137168640, while the sum is 67.

The spelling of 16072691794645 in words is "sixteen trillion, seventy-two billion, six hundred ninety-one million, seven hundred ninety-four thousand, six hundred forty-five".