40255333566 has 64 divisors (see below), whose sum is σ = 97546498560. Its totient is φ = 10811427840.

The previous prime is 40255333529. The next prime is 40255333589. The reversal of 40255333566 is 66533355204.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542781 + ... + 612471.

It is an arithmetic number, because the mean of its divisors is an integer number (1524164040).

Almost surely, 2^40255333566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40255333566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48773249280).

40255333566 is an abundant number, since it is smaller than the sum of its proper divisors (57291164994).

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

40255333566 is a wasteful number, since it uses less digits than its factorization.

40255333566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70529.

The product of its (nonzero) digits is 972000, while the sum is 42.

The spelling of 40255333566 in words is "forty billion, two hundred fifty-five million, three hundred thirty-three thousand, five hundred sixty-six".