4001520145 has 64 divisors (see below), whose sum is σ = 5782081536. Its totient is φ = 2601123840.

The previous prime is 4001520109. The next prime is 4001520161. The reversal of 4001520145 is 5410251004.

It is not a de Polignac number, because 4001520145 - 2¹⁵ = 4001487377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20312187 + ... + 20312383.

It is an arithmetic number, because the mean of its divisors is an integer number (90345024).

Almost surely, 2^4001520145 is an apocalyptic number.

It is an amenable number.

4001520145 is a deficient number, since it is larger than the sum of its proper divisors (1780561391).

4001520145 is a wasteful number, since it uses less digits than its factorization.

4001520145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 4001520145 is about 63257.5698632187. The cubic root of 4001520145 is about 1587.6021164808.

Adding to 4001520145 its reverse (5410251004), we get a palindrome (9411771149).

The spelling of 4001520145 in words is "four billion, one million, five hundred twenty thousand, one hundred forty-five".