40452561720 has 48 divisors (see below), whose sum is σ = 131470826760. Its totient is φ = 10787349696.

The previous prime is 40452561719. The next prime is 40452561739. The reversal of 40452561720 is 2716525404.

It is a happy number.

40452561720 is a `hidden beast` number, since 4 + 0 + 4 + 525 + 61 + 72 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56183754 + ... + 56184473.

Almost surely, 2^40452561720 is an apocalyptic number.

40452561720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40452561720 is an abundant number, since it is smaller than the sum of its proper divisors (91018265040).

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

40452561720 is a wasteful number, since it uses less digits than its factorization.

40452561720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112368244 (or 112368237 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 40452561720 in words is "forty billion, four hundred fifty-two million, five hundred sixty-one thousand, seven hundred twenty".