11805622500 has 120 divisors (see below), whose sum is σ = 39339657280. Its totient is φ = 2698416000.

The previous prime is 11805622487. The next prime is 11805622519. The reversal of 11805622500 is 522650811.

It is a super-2 number, since 2×11805622500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 59935 + ... + 164934.

Almost surely, 2^11805622500 is an apocalyptic number.

11805622500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11805622500 is an abundant number, since it is smaller than the sum of its proper divisors (27534034780).

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

11805622500 is a wasteful number, since it uses less digits than its factorization.

11805622500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224903 (or 224886 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 11805622500 in words is "eleven billion, eight hundred five million, six hundred twenty-two thousand, five hundred".