20153369688 has 64 divisors (see below), whose sum is σ = 51617554560. Its totient is φ = 6553618176.

The previous prime is 20153369671. The next prime is 20153369713. The reversal of 20153369688 is 88696335102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20153369688.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 873031 + ... + 895817.

It is an arithmetic number, because the mean of its divisors is an integer number (806524290).

Almost surely, 2^20153369688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20153369688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25808777280).

20153369688 is an abundant number, since it is smaller than the sum of its proper divisors (31464184872).

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

20153369688 is a wasteful number, since it uses less digits than its factorization.

20153369688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23696 (or 23692 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 20153369688 in words is "twenty billion, one hundred fifty-three million, three hundred sixty-nine thousand, six hundred eighty-eight".