20308105368 has 24 divisors (see below), whose sum is σ = 55001118900. Its totient is φ = 6769368432.

The previous prime is 20308105357. The next prime is 20308105387. The reversal of 20308105368 is 86350180302.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141028438 + ... + 141028581.

Almost surely, 2^20308105368 is an apocalyptic number.

It is an amenable number.

20308105368 is an abundant number, since it is smaller than the sum of its proper divisors (34693013532).

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

20308105368 is a wasteful number, since it uses less digits than its factorization.

20308105368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282057031 (or 282057024 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 20308105368 in words is "twenty billion, three hundred eight million, one hundred five thousand, three hundred sixty-eight".