16612331775645 has 16 divisors (see below), whose sum is σ = 26586121835520. Its totient is φ = 8857779948864.

The previous prime is 16612331775619. The next prime is 16612331775647. The reversal of 16612331775645 is 54657713321661.

It is not a de Polignac number, because 16612331775645 - 2⁶ = 16612331775581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16612331775647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133081254 + ... + 133206023.

It is an arithmetic number, because the mean of its divisors is an integer number (1661632614720).

Almost surely, 2^{16612331775645} is an apocalyptic number.

16612331775645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16612331775645 is a deficient number, since it is larger than the sum of its proper divisors (9973790059875).

16612331775645 is a wasteful number, since it uses less digits than its factorization.

16612331775645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266291444.

The product of its digits is 19051200, while the sum is 57.

The spelling of 16612331775645 in words is "sixteen trillion, six hundred twelve billion, three hundred thirty-one million, seven hundred seventy-five thousand, six hundred forty-five".