40450205520 has 80 divisors (see below), whose sum is σ = 139328493120. Its totient is φ = 10786720896.

The previous prime is 40450205513. The next prime is 40450205531. The reversal of 40450205520 is 2550205404.

40450205520 is a `hidden beast` number, since 4 + 0 + 450 + 205 + 5 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×40450205520² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9361314 + ... + 9365633.

It is an arithmetic number, because the mean of its divisors is an integer number (1741606164).

Almost surely, 2^40450205520 is an apocalyptic number.

40450205520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40450205520 is an abundant number, since it is smaller than the sum of its proper divisors (98878287600).

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

40450205520 is a wasteful number, since it uses less digits than its factorization.

40450205520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18726969 (or 18726957 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The spelling of 40450205520 in words is "forty billion, four hundred fifty million, two hundred five thousand, five hundred twenty".