40723733728 has 12 divisors (see below), whose sum is σ = 80174850840. Its totient is φ = 20361866848.

The previous prime is 40723733683. The next prime is 40723733741. The reversal of 40723733728 is 82733732704.

It is a happy number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 636308308 + ... + 636308371.

It is an arithmetic number, because the mean of its divisors is an integer number (6681237570).

Almost surely, 2^40723733728 is an apocalyptic number.

It is an amenable number.

40723733728 is a deficient number, since it is larger than the sum of its proper divisors (39451117112).

40723733728 is a wasteful number, since it uses less digits than its factorization.

40723733728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272616689 (or 1272616681 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 46.

The spelling of 40723733728 in words is "forty billion, seven hundred twenty-three million, seven hundred thirty-three thousand, seven hundred twenty-eight".