4020353545 has 32 divisors (see below), whose sum is σ = 5790718080. Its totient is φ = 2647157760.

The previous prime is 4020353521. The next prime is 4020353551. The reversal of 4020353545 is 5453530204.

It is a happy number.

It is not a de Polignac number, because 4020353545 - 2¹³ = 4020345353 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 74751 + ... + 116740.

It is an arithmetic number, because the mean of its divisors is an integer number (180959940).

Almost surely, 2^4020353545 is an apocalyptic number.

It is an amenable number.

4020353545 is a deficient number, since it is larger than the sum of its proper divisors (1770364535).

4020353545 is a wasteful number, since it uses less digits than its factorization.

4020353545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191545.

The product of its (nonzero) digits is 36000, while the sum is 31.

The square root of 4020353545 is about 63406.2579324786. The cubic root of 4020353545 is about 1590.0889346771.

Adding to 4020353545 its reverse (5453530204), we get a palindrome (9473883749).

The spelling of 4020353545 in words is "four billion, twenty million, three hundred fifty-three thousand, five hundred forty-five".