11720423562444 has 96 divisors (see below), whose sum is σ = 31469692800000. Its totient is φ = 3767817549888.

The previous prime is 11720423562409. The next prime is 11720423562481. The reversal of 11720423562444 is 44426532402711.

11720423562444 is a `hidden beast` number, since 1 + 1 + 7 + 2 + 0 + 42 + 3 + 562 + 4 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 11720423562444.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 646557 + ... + 4884555.

It is an arithmetic number, because the mean of its divisors is an integer number (327809300000).

Almost surely, 2^{11720423562444} 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 11720423562444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15734846400000).

11720423562444 is an abundant number, since it is smaller than the sum of its proper divisors (19749269237556).

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

11720423562444 is a wasteful number, since it uses less digits than its factorization.

11720423562444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4238924 (or 4238916 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 11720423562444 in words is "eleven trillion, seven hundred twenty billion, four hundred twenty-three million, five hundred sixty-two thousand, four hundred forty-four".