11861312520500 has 48 divisors (see below), whose sum is σ = 26456279076864. Its totient is φ = 4643577658400.

The previous prime is 11861312520481. The next prime is 11861312520511. The reversal of 11861312520500 is 502521316811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252344852 + ... + 252391851.

It is an arithmetic number, because the mean of its divisors is an integer number (551172480768).

Almost surely, 2^{11861312520500} is an apocalyptic number.

11861312520500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11861312520500 is an abundant number, since it is smaller than the sum of its proper divisors (14594966556364).

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

11861312520500 is a wasteful number, since it uses less digits than its factorization.

11861312520500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504736769 (or 504736757 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 11861312520500 in words is "eleven trillion, eight hundred sixty-one billion, three hundred twelve million, five hundred twenty thousand, five hundred".