40217235440 has 20 divisors (see below), whose sum is σ = 93505072584. Its totient is φ = 16086894144.

The previous prime is 40217235371. The next prime is 40217235463. The reversal of 40217235440 is 4453271204.

40217235440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 40217235397 and 40217235406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251357642 + ... + 251357801.

Almost surely, 2^40217235440 is an apocalyptic number.

40217235440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40217235440 is an abundant number, since it is smaller than the sum of its proper divisors (53287837144).

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

40217235440 is a wasteful number, since it uses less digits than its factorization.

40217235440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502715456 (or 502715450 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The spelling of 40217235440 in words is "forty billion, two hundred seventeen million, two hundred thirty-five thousand, four hundred forty".