40366730385 has 24 divisors (see below), whose sum is σ = 70028038080. Its totient is φ = 21510757152.

The previous prime is 40366730311. The next prime is 40366730413. The reversal of 40366730385 is 58303766304.

It is not a de Polignac number, because 40366730385 - 2¹⁷ = 40366599313 is a prime.

It is a super-3 number, since 3×40366730385³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40366730385.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324445 + ... + 431274.

It is an arithmetic number, because the mean of its divisors is an integer number (2917834920).

Almost surely, 2^40366730385 is an apocalyptic number.

40366730385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40366730385 is a deficient number, since it is larger than the sum of its proper divisors (29661307695).

40366730385 is a wasteful number, since it uses less digits than its factorization.

40366730385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756917 (or 756914 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 40366730385 in words is "forty billion, three hundred sixty-six million, seven hundred thirty thousand, three hundred eighty-five".