40655506500 has 384 divisors, whose sum is σ = 158254387200. Its totient is φ = 8803209600.

The previous prime is 40655506499. The next prime is 40655506517. The reversal of 40655506500 is 560555604.

It is a happy number.

40655506500 is a `hidden beast` number, since 40 + 6 + 5 + 550 + 65 + 0 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1784179 + ... + 1806821.

It is an arithmetic number, because the mean of its divisors is an integer number (412120800).

Almost surely, 2^40655506500 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 40655506500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79127193600).

40655506500 is an abundant number, since it is smaller than the sum of its proper divisors (117598880700).

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

40655506500 is a wasteful number, since it uses less digits than its factorization.

40655506500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22697 (or 22679 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 40655506500 in words is "forty billion, six hundred fifty-five million, five hundred six thousand, five hundred".