11173500000 has 504 divisors, whose sum is σ = 42996949632. Its totient is φ = 2736000000.

The previous prime is 11173499971. The next prime is 11173500029. The reversal of 11173500000 is 537111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11173499971) and next prime (11173500029).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 58499905 + ... + 58500095.

It is an arithmetic number, because the mean of its divisors is an integer number (85311408).

Almost surely, 2^11173500000 is an apocalyptic number.

11173500000 is a gapful number since it is divisible by the number (10) 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 11173500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21498474816).

11173500000 is an abundant number, since it is smaller than the sum of its proper divisors (31823449632).

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

11173500000 is an equidigital number, since it uses as much as digits as its factorization.

11173500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 105, while the sum is 18.

The spelling of 11173500000 in words is "eleven billion, one hundred seventy-three million, five hundred thousand".