40561986160 has 20 divisors (see below), whose sum is σ = 94306618008. Its totient is φ = 16224794432.

The previous prime is 40561986149. The next prime is 40561986187. The reversal of 40561986160 is 6168916504.

40561986160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 40561986160.

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, 253512334 + ... + 253512493.

Almost surely, 2^40561986160 is an apocalyptic number.

40561986160 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40561986160 is an abundant number, since it is smaller than the sum of its proper divisors (53744631848).

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

40561986160 is a wasteful number, since it uses less digits than its factorization.

40561986160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507024840 (or 507024834 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 40561986160 in words is "forty billion, five hundred sixty-one million, nine hundred eighty-six thousand, one hundred sixty".