20074118857 has 8 divisors (see below), whose sum is σ = 22889945736. Its totient is φ = 17439958272.

The previous prime is 20074118777. The next prime is 20074118873. The reversal of 20074118857 is 75881147002.

It can be written as a sum of positive squares in 4 ways, for example, as 2241454336 + 17832664521 = 47344^2 + 133539^2 .

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 20074118857 - 2¹⁵ = 20074086089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20074118557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45416338 + ... + 45416779.

It is an arithmetic number, because the mean of its divisors is an integer number (2861243217).

Almost surely, 2^20074118857 is an apocalyptic number.

It is an amenable number.

20074118857 is a deficient number, since it is larger than the sum of its proper divisors (2815826879).

20074118857 is a wasteful number, since it uses less digits than its factorization.

20074118857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90833147.

The product of its (nonzero) digits is 125440, while the sum is 43.

The spelling of 20074118857 in words is "twenty billion, seventy-four million, one hundred eighteen thousand, eight hundred fifty-seven".