4545455909091 has 16 divisors (see below), whose sum is σ = 6189738336768. Its totient is φ = 2965742488800.

The previous prime is 4545455909087. The next prime is 4545455909143. The reversal of 4545455909091 is 1909095545454.

It is a happy number.

It is not a de Polignac number, because 4545455909091 - 2² = 4545455909087 is a prime.

It is a super-2 number, since 2×4545455909091² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4545455909591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4545456 + ... + 5454546.

It is an arithmetic number, because the mean of its divisors is an integer number (386858646048).

Almost surely, 2^{4545455909091} is an apocalyptic number.

4545455909091 is a deficient number, since it is larger than the sum of its proper divisors (1644282427677).

4545455909091 is a wasteful number, since it uses less digits than its factorization.

4545455909091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944602.

The product of its (nonzero) digits is 29160000, while the sum is 60.

It can be divided in two parts, 454545 and 5909091, that added together give a palindrome (6363636).

The spelling of 4545455909091 in words is "four trillion, five hundred forty-five billion, four hundred fifty-five million, nine hundred nine thousand, ninety-one".