40920055550 has 48 divisors (see below), whose sum is σ = 86640561792. Its totient is φ = 14233058400.

The previous prime is 40920055541. The next prime is 40920055559. The reversal of 40920055550 is 5555002904.

It is an interprime number because it is at equal distance from previous prime (40920055541) and next prime (40920055559).

It is a self number, because there is not a number n which added to its sum of digits gives 40920055550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40920055559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1604744 + ... + 1630043.

It is an arithmetic number, because the mean of its divisors is an integer number (1805011704).

Almost surely, 2^40920055550 is an apocalyptic number.

40920055550 is an abundant number, since it is smaller than the sum of its proper divisors (45720506242).

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

40920055550 is a wasteful number, since it uses less digits than its factorization.

40920055550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234833 (or 3234828 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 40920055550 in words is "forty billion, nine hundred twenty million, fifty-five thousand, five hundred fifty".