40505545454 has 12 divisors (see below), whose sum is σ = 66783936912. Its totient is φ = 18411611460.

The previous prime is 40505545441. The next prime is 40505545513. The reversal of 40505545454 is 45454550504.

It is a super-2 number, since 2×40505545454² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83688902 + ... + 83689385.

It is an arithmetic number, because the mean of its divisors is an integer number (5565328076).

Almost surely, 2^40505545454 is an apocalyptic number.

40505545454 is a deficient number, since it is larger than the sum of its proper divisors (26278391458).

40505545454 is a wasteful number, since it uses less digits than its factorization.

40505545454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167378311 (or 167378300 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 41.

The spelling of 40505545454 in words is "forty billion, five hundred five million, five hundred forty-five thousand, four hundred fifty-four".