20365389518 has 8 divisors (see below), whose sum is σ = 30818421648. Its totient is φ = 10092582304.

The previous prime is 20365389503. The next prime is 20365389589. The reversal of 20365389518 is 81598356302.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45055946 + ... + 45056397.

It is an arithmetic number, because the mean of its divisors is an integer number (3852302706).

Almost surely, 2^20365389518 is an apocalyptic number.

20365389518 is a deficient number, since it is larger than the sum of its proper divisors (10453032130).

20365389518 is a wasteful number, since it uses less digits than its factorization.

20365389518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90112458.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 20365389518 in words is "twenty billion, three hundred sixty-five million, three hundred eighty-nine thousand, five hundred eighteen".