20618484358 has 12 divisors (see below), whose sum is σ = 31786206732. Its totient is φ = 10030612680.

The previous prime is 20618484311. The next prime is 20618484373. The reversal of 20618484358 is 85348481602.

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 3762508 + ... + 3767983.

It is an arithmetic number, because the mean of its divisors is an integer number (2648850561).

Almost surely, 2^20618484358 is an apocalyptic number.

20618484358 is a deficient number, since it is larger than the sum of its proper divisors (11167722374).

20618484358 is an equidigital number, since it uses as much as digits as its factorization.

20618484358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7530567 (or 7530530 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 20618484358 in words is "twenty billion, six hundred eighteen million, four hundred eighty-four thousand, three hundred fifty-eight".