3854856844155 has 32 divisors (see below), whose sum is σ = 6585607835136. Its totient is φ = 1920802270464.

The previous prime is 3854856844127. The next prime is 3854856844183. The reversal of 3854856844155 is 5514486584583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3854856844127) and next prime (3854856844183).

It is not a de Polignac number, because 3854856844155 - 2⁸ = 3854856843899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129909562 + ... + 129939231.

It is an arithmetic number, because the mean of its divisors is an integer number (205800244848).

Almost surely, 2^{3854856844155} is an apocalyptic number.

3854856844155 is a deficient number, since it is larger than the sum of its proper divisors (2730750990981).

3854856844155 is a wasteful number, since it uses less digits than its factorization.

3854856844155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259848867.

The product of its digits is 368640000, while the sum is 66.

The spelling of 3854856844155 in words is "three trillion, eight hundred fifty-four billion, eight hundred fifty-six million, eight hundred forty-four thousand, one hundred fifty-five".