20213401500 has 96 divisors (see below), whose sum is σ = 65401627200. Its totient is φ = 5390236800.

The previous prime is 20213401499. The next prime is 20213401529. The reversal of 20213401500 is 510431202.

20213401500 is a `hidden beast` number, since 2 + 0 + 213 + 401 + 50 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735145 + ... + 762144.

It is an arithmetic number, because the mean of its divisors is an integer number (681266950).

Almost surely, 2^20213401500 is an apocalyptic number.

20213401500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20213401500 is an abundant number, since it is smaller than the sum of its proper divisors (45188225700).

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

20213401500 is a wasteful number, since it uses less digits than its factorization.

20213401500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497317 (or 1497299 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 20213401500 its reverse (510431202), we get a palindrome (20723832702).

The spelling of 20213401500 in words is "twenty billion, two hundred thirteen million, four hundred one thousand, five hundred".