40220578944 has 1024 divisors, whose sum is σ = 157925376000. Its totient is φ = 9782083584.

The previous prime is 40220578939. The next prime is 40220578967. The reversal of 40220578944 is 44987502204.

It is a self number, because there is not a number n which added to its sum of digits gives 40220578944.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 316697409 + ... + 316697535.

It is an arithmetic number, because the mean of its divisors is an integer number (154224000).

Almost surely, 2^40220578944 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 40220578944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78962688000).

40220578944 is an abundant number, since it is smaller than the sum of its proper divisors (117704797056).

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

40220578944 is a wasteful number, since it uses less digits than its factorization.

40220578944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 40220578944 in words is "forty billion, two hundred twenty million, five hundred seventy-eight thousand, nine hundred forty-four".