11722574340 has 120 divisors (see below), whose sum is σ = 36840820632. Its totient is φ = 3120353280.

The previous prime is 11722574333. The next prime is 11722574371. The reversal of 11722574340 is 4347522711.

11722574340 is a `hidden beast` number, since 1 + 172 + 2 + 57 + 434 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6927565824 + 4795008516 = 83232^2 + 69246^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11722574295 and 11722574304.

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, 928470 + ... + 941010.

Almost surely, 2^11722574340 is an apocalyptic number.

11722574340 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 11722574340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18420410316).

11722574340 is an abundant number, since it is smaller than the sum of its proper divisors (25118246292).

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

11722574340 is a wasteful number, since it uses less digits than its factorization.

11722574340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13139 (or 13128 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 11722574340 in words is "eleven billion, seven hundred twenty-two million, five hundred seventy-four thousand, three hundred forty".