40536447540 has 96 divisors (see below), whose sum is σ = 117344747520. Its totient is φ = 10444828800.

The previous prime is 40536447527. The next prime is 40536447607. The reversal of 40536447540 is 4574463504.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40536447492 and 40536447501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1209205 + ... + 1242275.

It is an arithmetic number, because the mean of its divisors is an integer number (1222341120).

Almost surely, 2^40536447540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40536447540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58672373760).

40536447540 is an abundant number, since it is smaller than the sum of its proper divisors (76808299980).

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

40536447540 is a wasteful number, since it uses less digits than its factorization.

40536447540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33773 (or 33771 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 42.

The spelling of 40536447540 in words is "forty billion, five hundred thirty-six million, four hundred forty-seven thousand, five hundred forty".