40505517960 has 64 divisors (see below), whose sum is σ = 121779175680. Its totient is φ = 10778127360.

The previous prime is 40505517911. The next prime is 40505517961. The reversal of 40505517960 is 6971550504.

It is not an unprimeable number, because it can be changed into a prime (40505517961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308961 + ... + 420080.

It is an arithmetic number, because the mean of its divisors is an integer number (1902799620).

Almost surely, 2^40505517960 is an apocalyptic number.

40505517960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40505517960 is an abundant number, since it is smaller than the sum of its proper divisors (81273657720).

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

40505517960 is a wasteful number, since it uses less digits than its factorization.

40505517960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729518 (or 729514 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 40505517960 in words is "forty billion, five hundred five million, five hundred seventeen thousand, nine hundred sixty".