20486463418 has 4 divisors (see below), whose sum is σ = 30729695130. Its totient is φ = 10243231708.

The previous prime is 20486463397. The next prime is 20486463421. The reversal of 20486463418 is 81436468402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81436468402 = 2 ⋅40718234201.

It can be written as a sum of positive squares in only one way, i.e., 19250730009 + 1235733409 = 138747^2 + 35153^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5121615853 + ... + 5121615856.

Almost surely, 2^20486463418 is an apocalyptic number.

20486463418 is a deficient number, since it is larger than the sum of its proper divisors (10243231712).

20486463418 is a wasteful number, since it uses less digits than its factorization.

20486463418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10243231711.

The product of its (nonzero) digits is 884736, while the sum is 46.

The spelling of 20486463418 in words is "twenty billion, four hundred eighty-six million, four hundred sixty-three thousand, four hundred eighteen".