245204052100 has 72 divisors (see below), whose sum is σ = 608710484480. Its totient is φ = 83986398720.

The previous prime is 245204051947. The next prime is 245204052127. The reversal of 245204052100 is 1250402542.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 532717 + ... + 879883.

Almost surely, 2^245204052100 is an apocalyptic number.

245204052100 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 245204052100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304355242240).

245204052100 is an abundant number, since it is smaller than the sum of its proper divisors (363506432380).

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

245204052100 is a wasteful number, since it uses less digits than its factorization.

245204052100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348197 (or 348190 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 245204052100 its reverse (1250402542), we get a palindrome (246454454642).

The spelling of 245204052100 in words is "two hundred forty-five billion, two hundred four million, fifty-two thousand, one hundred".