11945169600 has 1344 divisors, whose sum is σ = 53336586240. Its totient is φ = 2270822400.

The previous prime is 11945169583. The next prime is 11945169601. The reversal of 11945169600 is 696154911.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (11945169601) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 291345580 + ... + 291345620.

It is an arithmetic number, because the mean of its divisors is an integer number (39684960).

Almost surely, 2^11945169600 is an apocalyptic number.

11945169600 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 11945169600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26668293120).

11945169600 is an abundant number, since it is smaller than the sum of its proper divisors (41391416640).

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

11945169600 is a wasteful number, since it uses less digits than its factorization.

11945169600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The spelling of 11945169600 in words is "eleven billion, nine hundred forty-five million, one hundred sixty-nine thousand, six hundred".