40555405650 has 48 divisors (see below), whose sum is σ = 100875981024. Its totient is φ = 10782670080.

The previous prime is 40555405609. The next prime is 40555405673. The reversal of 40555405650 is 5650455504.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40555405599 and 40555405608.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 350592 + ... + 451691.

It is an arithmetic number, because the mean of its divisors is an integer number (2101582938).

Almost surely, 2^40555405650 is an apocalyptic number.

40555405650 is an abundant number, since it is smaller than the sum of its proper divisors (60320575374).

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

40555405650 is a wasteful number, since it uses less digits than its factorization.

40555405650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802635 (or 802630 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 39.

The spelling of 40555405650 in words is "forty billion, five hundred fifty-five million, four hundred five thousand, six hundred fifty".