40561520320536 has 64 divisors (see below), whose sum is σ = 102793021747200. Its totient is φ = 13336508078208.

The previous prime is 40561520320523. The next prime is 40561520320543. The reversal of 40561520320536 is 63502302516504.

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 in 15 ways as a sum of consecutive naturals, for example, 37933926 + ... + 38988533.

It is an arithmetic number, because the mean of its divisors is an integer number (1606140964800).

Almost surely, 2^{40561520320536} is an apocalyptic number.

It is an amenable number.

40561520320536 is an abundant number, since it is smaller than the sum of its proper divisors (62231501426664).

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

40561520320536 is a wasteful number, since it uses less digits than its factorization.

40561520320536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76922768 (or 76922764 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 40561520320536 in words is "forty trillion, five hundred sixty-one billion, five hundred twenty million, three hundred twenty thousand, five hundred thirty-six".