4000145015 has 12 divisors (see below), whose sum is σ = 4971410184. Its totient is φ = 3089763936.

The previous prime is 4000145003. The next prime is 4000145053. The reversal of 4000145015 is 5105410004.

It is not a de Polignac number, because 4000145015 - 2¹⁸ = 3999882871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471437 + ... + 479846.

It is an arithmetic number, because the mean of its divisors is an integer number (414284182).

Almost surely, 2^4000145015 is an apocalyptic number.

4000145015 is a deficient number, since it is larger than the sum of its proper divisors (971265169).

4000145015 is an equidigital number, since it uses as much as digits as its factorization.

4000145015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951346 (or 951317 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 4000145015 is about 63246.6996372143. The cubic root of 4000145015 is about 1587.4202348167.

Adding to 4000145015 its reverse (5105410004), we get a palindrome (9105555019).

The spelling of 4000145015 in words is "four billion, one hundred forty-five thousand, fifteen".