4020045635 has 8 divisors (see below), whose sum is σ = 4825052016. Its totient is φ = 3215371680.

The previous prime is 4020045599. The next prime is 4020045637. The reversal of 4020045635 is 5365400204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4020045635 - 2²⁸ = 3751610179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4020045598 and 4020045607.

It is not an unprimeable number, because it can be changed into a prime (4020045637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55676 + ... + 105545.

It is an arithmetic number, because the mean of its divisors is an integer number (603131502).

Almost surely, 2^4020045635 is an apocalyptic number.

4020045635 is a deficient number, since it is larger than the sum of its proper divisors (805006381).

4020045635 is a wasteful number, since it uses less digits than its factorization.

4020045635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166213.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 4020045635 is about 63403.8298133480. The cubic root of 4020045635 is about 1590.0483398407.

Adding to 4020045635 its reverse (5365400204), we get a palindrome (9385445839).

The spelling of 4020045635 in words is "four billion, twenty million, forty-five thousand, six hundred thirty-five".