16612651043045 has 4 divisors (see below), whose sum is σ = 19935181251660. Its totient is φ = 13290120834432.

The previous prime is 16612651043003. The next prime is 16612651043083. The reversal of 16612651043045 is 54034015621661.

It is a Cunningham number, because it is equal to 4075862²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5980558288324 + 10632092754721 = 2445518^2 + 3260689^2 .

It is a cyclic number.

It is not a de Polignac number, because 16612651043045 - 2⁸ = 16612651042789 is a prime.

It is a super-3 number, since 3×16612651043045³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16612651042987 and 16612651043005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661265104300 + ... + 1661265104309.

It is an arithmetic number, because the mean of its divisors is an integer number (4983795312915).

Almost surely, 2^{16612651043045} is an apocalyptic number.

It is an amenable number.

16612651043045 is a deficient number, since it is larger than the sum of its proper divisors (3322530208615).

16612651043045 is an equidigital number, since it uses as much as digits as its factorization.

16612651043045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322530208614.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 16612651043045 in words is "sixteen trillion, six hundred twelve billion, six hundred fifty-one million, forty-three thousand, forty-five".