20091018463 has 8 divisors (see below), whose sum is σ = 20916679568. Its totient is φ = 19280234304.

The previous prime is 20091018427. The next prime is 20091018473. The reversal of 20091018463 is 36481019002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20091018463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20091018473) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3716481 + ... + 3721882.

It is an arithmetic number, because the mean of its divisors is an integer number (2614584946).

Almost surely, 2^20091018463 is an apocalyptic number.

20091018463 is a deficient number, since it is larger than the sum of its proper divisors (825661105).

20091018463 is an equidigital number, since it uses as much as digits as its factorization.

20091018463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7438473.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 20091018463 in words is "twenty billion, ninety-one million, eighteen thousand, four hundred sixty-three".