4000851555 has 8 divisors (see below), whose sum is σ = 6401362512. Its totient is φ = 2133787488.

The previous prime is 4000851539. The next prime is 4000851563. The reversal of 4000851555 is 5551580004.

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

It is not a de Polignac number, because 4000851555 - 2⁴ = 4000851539 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 7 ways as a sum of consecutive naturals, for example, 133361704 + ... + 133361733.

It is an arithmetic number, because the mean of its divisors is an integer number (800170314).

Almost surely, 2^4000851555 is an apocalyptic number.

4000851555 is a deficient number, since it is larger than the sum of its proper divisors (2400510957).

4000851555 is a wasteful number, since it uses less digits than its factorization.

4000851555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266723445.

The product of its (nonzero) digits is 20000, while the sum is 33.

The square root of 4000851555 is about 63252.2849784891. The cubic root of 4000851555 is about 1587.5136905840.

The spelling of 4000851555 in words is "four billion, eight hundred fifty-one thousand, five hundred fifty-five".