20233451500 has 48 divisors (see below), whose sum is σ = 46515661920. Its totient is φ = 7667409600.

The previous prime is 20233451489. The next prime is 20233451507. The reversal of 20233451500 is 515433202.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (20233451507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055419 + ... + 1074418.

It is an arithmetic number, because the mean of its divisors is an integer number (969076290).

Almost surely, 2^20233451500 is an apocalyptic number.

20233451500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20233451500 is an abundant number, since it is smaller than the sum of its proper divisors (26282210420).

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

20233451500 is a wasteful number, since it uses less digits than its factorization.

20233451500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129875 (or 2129863 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 20233451500 its reverse (515433202), we get a palindrome (20748884702).

The spelling of 20233451500 in words is "twenty billion, two hundred thirty-three million, four hundred fifty-one thousand, five hundred".