4000015155 has 8 divisors (see below), whose sum is σ = 6400024272. Its totient is φ = 2133341408.

The previous prime is 4000015139. The next prime is 4000015171. The reversal of 4000015155 is 5515100004.

4000015155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4000015139) and next prime (4000015171).

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

It is a cyclic number.

It is not a de Polignac number, because 4000015155 - 2⁴ = 4000015139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133333824 + ... + 133333853.

It is an arithmetic number, because the mean of its divisors is an integer number (800003034).

Almost surely, 2^4000015155 is an apocalyptic number.

4000015155 is a deficient number, since it is larger than the sum of its proper divisors (2400009117).

4000015155 is a wasteful number, since it uses less digits than its factorization.

4000015155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266667685.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 4000015155 is about 63245.6730140490. The cubic root of 4000015155 is about 1587.4030567209.

Adding to 4000015155 its reverse (5515100004), we get a palindrome (9515115159).

It can be divided in two parts, 40000 and 15155, that added together give a palindrome (55155).

The spelling of 4000015155 in words is "four billion, fifteen thousand, one hundred fifty-five".