40455421550 has 24 divisors (see below), whose sum is σ = 76848090336. Its totient is φ = 15837866240.

The previous prime is 40455421537. The next prime is 40455421583. The reversal of 40455421550 is 5512455404.

It is a super-2 number, since 2×40455421550² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40455421550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8605187 + ... + 8609886.

It is an arithmetic number, because the mean of its divisors is an integer number (3202003764).

Almost surely, 2^40455421550 is an apocalyptic number.

40455421550 is a deficient number, since it is larger than the sum of its proper divisors (36392668786).

40455421550 is a wasteful number, since it uses less digits than its factorization.

40455421550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17215132 (or 17215127 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 40455421550 its reverse (5512455404), we get a palindrome (45967876954).

The spelling of 40455421550 in words is "forty billion, four hundred fifty-five million, four hundred twenty-one thousand, five hundred fifty".