20354621360 has 20 divisors (see below), whose sum is σ = 47324494848. Its totient is φ = 8141848512.

The previous prime is 20354621333. The next prime is 20354621369. The reversal of 20354621360 is 6312645302.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×20354621360² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20354621369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127216304 + ... + 127216463.

Almost surely, 2^20354621360 is an apocalyptic number.

20354621360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20354621360 is an abundant number, since it is smaller than the sum of its proper divisors (26969873488).

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

20354621360 is a wasteful number, since it uses less digits than its factorization.

20354621360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254432780 (or 254432774 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 20354621360 in words is "twenty billion, three hundred fifty-four million, six hundred twenty-one thousand, three hundred sixty".