4011523240644 has 144 divisors (see below), whose sum is σ = 10942007731200. Its totient is φ = 1234466288640.

The previous prime is 4011523240639. The next prime is 4011523240651. The reversal of 4011523240644 is 4460423251104.

4011523240644 is a `hidden beast` number, since 4 + 0 + 1 + 1 + 5 + 2 + 3 + 2 + 4 + 0 + 644 = 666.

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 = 4011523240599 and 4011523240608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155647479 + ... + 155673249.

It is an arithmetic number, because the mean of its divisors is an integer number (75986164800).

Almost surely, 2^{4011523240644} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4011523240644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5471003865600).

4011523240644 is an abundant number, since it is smaller than the sum of its proper divisors (6930484490556).

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

4011523240644 is a wasteful number, since it uses less digits than its factorization.

4011523240644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30650 (or 30645 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 4011523240644 its reverse (4460423251104), we get a palindrome (8471946491748).

The spelling of 4011523240644 in words is "four trillion, eleven billion, five hundred twenty-three million, two hundred forty thousand, six hundred forty-four".