40217453280 has 144 divisors (see below), whose sum is σ = 137658319344. Its totient is φ = 10692126720.

The previous prime is 40217453239. The next prime is 40217453281. The reversal of 40217453280 is 8235471204.

It is a happy number.

40217453280 is a `hidden beast` number, since 40 + 2 + 1 + 7 + 4 + 532 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 (40217453281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 434452 + ... + 518828.

It is an arithmetic number, because the mean of its divisors is an integer number (955960551).

Almost surely, 2^40217453280 is an apocalyptic number.

40217453280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40217453280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68829159672).

40217453280 is an abundant number, since it is smaller than the sum of its proper divisors (97440866064).

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

40217453280 is a wasteful number, since it uses less digits than its factorization.

40217453280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84729 (or 84718 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 40217453280 in words is "forty billion, two hundred seventeen million, four hundred fifty-three thousand, two hundred eighty".