40729318918 has 8 divisors (see below), whose sum is σ = 61149979800. Its totient is φ = 20345992320.

The previous prime is 40729318849. The next prime is 40729318967. The reversal of 40729318918 is 81981392704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9330843 + ... + 9335206.

It is an arithmetic number, because the mean of its divisors is an integer number (7643747475).

Almost surely, 2^40729318918 is an apocalyptic number.

40729318918 is a deficient number, since it is larger than the sum of its proper divisors (20420660882).

40729318918 is a wasteful number, since it uses less digits than its factorization.

40729318918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18667142.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 40729318918 in words is "forty billion, seven hundred twenty-nine million, three hundred eighteen thousand, nine hundred eighteen".