40255705440 has 72 divisors (see below), whose sum is σ = 137372599728. Its totient is φ = 10734854400.

The previous prime is 40255705439. The next prime is 40255705537. The reversal of 40255705440 is 4450755204.

It is a happy number.

40255705440 is a `hidden beast` number, since 40 + 2 + 5 + 5 + 70 + 544 + 0 = 666.

40255705440 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 (72).

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

It is a junction number, because it is equal to n+sod(n) for n = 40255705395 and 40255705404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13976236 + ... + 13979115.

It is an arithmetic number, because the mean of its divisors is an integer number (1907952774).

Almost surely, 2^40255705440 is an apocalyptic number.

40255705440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40255705440 is an abundant number, since it is smaller than the sum of its proper divisors (97116894288).

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

40255705440 is a wasteful number, since it uses less digits than its factorization.

40255705440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27955372 (or 27955361 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 36.

The spelling of 40255705440 in words is "forty billion, two hundred fifty-five million, seven hundred five thousand, four hundred forty".