40366747728 has 60 divisors (see below), whose sum is σ = 113970616500. Its totient is φ = 13336501248.

The previous prime is 40366747727. The next prime is 40366747763. The reversal of 40366747728 is 82774766304.

It can be written as a sum of positive squares in 2 ways, for example, as 2135548944 + 38231198784 = 46212^2 + 195528^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40366747727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1224103 + ... + 1256646.

It is an arithmetic number, because the mean of its divisors is an integer number (1899510275).

Almost surely, 2^40366747728 is an apocalyptic number.

40366747728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40366747728 is an abundant number, since it is smaller than the sum of its proper divisors (73603868772).

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

40366747728 is a wasteful number, since it uses less digits than its factorization.

40366747728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480876 (or 2480867 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 54.

The spelling of 40366747728 in words is "forty billion, three hundred sixty-six million, seven hundred forty-seven thousand, seven hundred twenty-eight".