11575379574 has 72 divisors (see below), whose sum is σ = 28295372280. Its totient is φ = 3507690780.

The previous prime is 11575379573. The next prime is 11575379597. The reversal of 11575379574 is 47597357511.

11575379574 is a `hidden beast` number, since 1 + 1 + 57 + 537 + 9 + 57 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 11575379574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11575379573) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1052307229 + ... + 1052307239.

Almost surely, 2^11575379574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11575379574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14147686140).

11575379574 is an abundant number, since it is smaller than the sum of its proper divisors (16719992706).

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

11575379574 is an frugal number, since it uses more digits than its factorization.

11575379574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 16 counting only the distinct ones).

The product of its digits is 4630500, while the sum is 54.

Multiplying 11575379574 by its sum of digits (54), we get a square (625070496996 = 790614²).

11575379574 divided by its sum of digits (54) gives a 8-th power (214358881 = 11⁸).

The spelling of 11575379574 in words is "eleven billion, five hundred seventy-five million, three hundred seventy-nine thousand, five hundred seventy-four".