20354600000 has 504 divisors, whose sum is σ = 61527561984. Its totient is φ = 6652800000.

The previous prime is 20354599999. The next prime is 20354600009. The reversal of 20354600000 is 645302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354600009) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 303799967 + ... + 303800033.

It is an arithmetic number, because the mean of its divisors is an integer number (122078496).

Almost surely, 2^20354600000 is an apocalyptic number.

20354600000 is a gapful number since it is divisible by the number (20) 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 20354600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30763780992).

20354600000 is an abundant number, since it is smaller than the sum of its proper divisors (41172961984).

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

20354600000 is an frugal number, since it uses more digits than its factorization.

20354600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The spelling of 20354600000 in words is "twenty billion, three hundred fifty-four million, six hundred thousand".