40666815896832 has 216 divisors, whose sum is σ = 119311979885280. Its totient is φ = 13317781155840.

The previous prime is 40666815896821. The next prime is 40666815896857. The reversal of 40666815896832 is 23869851866604.

40666815896832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226515582 + ... + 226695042.

Almost surely, 2^{40666815896832} 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 40666815896832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59655989942640).

40666815896832 is an abundant number, since it is smaller than the sum of its proper divisors (78645163988448).

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

40666815896832 is a wasteful number, since it uses less digits than its factorization.

40666815896832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181209 (or 181192 counting only the distinct ones).

The product of its (nonzero) digits is 716636160, while the sum is 72.

The spelling of 40666815896832 in words is "forty trillion, six hundred sixty-six billion, eight hundred fifteen million, eight hundred ninety-six thousand, eight hundred thirty-two".