20358699036 has 96 divisors (see below), whose sum is σ = 51659328000. Its totient is φ = 6203070720.

The previous prime is 20358699013. The next prime is 20358699043. The reversal of 20358699036 is 63099685302.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20358699036.

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 31 ways as a sum of consecutive naturals, for example, 8808321 + ... + 8810631.

It is an arithmetic number, because the mean of its divisors is an integer number (538118000).

Almost surely, 2^20358699036 is an apocalyptic number.

20358699036 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20358699036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25829664000).

20358699036 is an abundant number, since it is smaller than the sum of its proper divisors (31300628964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20358699036 is a wasteful number, since it uses less digits than its factorization.

20358699036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859 (or 2857 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 20358699036 in words is "twenty billion, three hundred fifty-eight million, six hundred ninety-nine thousand, thirty-six".