20366246042 has 4 divisors (see below), whose sum is σ = 30549369066. Its totient is φ = 10183123020.

The previous prime is 20366246039. The next prime is 20366246051. The reversal of 20366246042 is 24064266302.

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

It can be written as a sum of positive squares in only one way, i.e., 18730933321 + 1635312721 = 136861^2 + 40439^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20366245993 and 20366246011.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5091561509 + ... + 5091561512.

Almost surely, 2^20366246042 is an apocalyptic number.

20366246042 is a deficient number, since it is larger than the sum of its proper divisors (10183123024).

20366246042 is a wasteful number, since it uses less digits than its factorization.

20366246042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10183123023.

The product of its (nonzero) digits is 82944, while the sum is 35.

The spelling of 20366246042 in words is "twenty billion, three hundred sixty-six million, two hundred forty-six thousand, forty-two".