40661106150420 has 288 divisors, whose sum is σ = 146872004837376. Its totient is φ = 9249918249600.

The previous prime is 40661106150403. The next prime is 40661106150421. The reversal of 40661106150420 is 2405160116604.

40661106150420 is a `hidden beast` number, since 4 + 0 + 6 + 6 + 1 + 10 + 615 + 0 + 4 + 20 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40661106150421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4345965 + ... + 10010475.

Almost surely, 2^{40661106150420} 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 40661106150420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73436002418688).

40661106150420 is an abundant number, since it is smaller than the sum of its proper divisors (106210898686956).

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

40661106150420 is a wasteful number, since it uses less digits than its factorization.

40661106150420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664753 (or 5664739 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 40661106150420 in words is "forty trillion, six hundred sixty-one billion, one hundred six million, one hundred fifty thousand, four hundred twenty".