868133002500 has 90 divisors (see below), whose sum is σ = 2742181431990. Its totient is φ = 231502128000.

The previous prime is 868133002489. The next prime is 868133002507. The reversal of 868133002500 is 5200331868.

It can be written as a sum of positive squares in 5 ways, for example, as 520544934144 + 347588068356 = 721488^2 + 589566^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (868133002507) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 19269345 + ... + 19314344.

Almost surely, 2^868133002500 is an apocalyptic number.

It is an amenable number.

868133002500 is an abundant number, since it is smaller than the sum of its proper divisors (1874048429490).

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

868133002500 is a wasteful number, since it uses less digits than its factorization.

868133002500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38583719 (or 38583699 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 868133002500 in words is "eight hundred sixty-eight billion, one hundred thirty-three million, two thousand, five hundred".