3855670691091 has 32 divisors (see below), whose sum is σ = 5171185152000. Its totient is φ = 2555351850240.

The previous prime is 3855670691039. The next prime is 3855670691099. The reversal of 3855670691091 is 1901960765583.

3855670691091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3855670691091 - 2²¹ = 3855668593939 is a prime.

It is a super-3 number, since 3×3855670691091³ (a number of 39 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3855670691099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 803429710 + ... + 803434508.

It is an arithmetic number, because the mean of its divisors is an integer number (161599536000).

Almost surely, 2^{3855670691091} is an apocalyptic number.

3855670691091 is a deficient number, since it is larger than the sum of its proper divisors (1315514460909).

3855670691091 is a wasteful number, since it uses less digits than its factorization.

3855670691091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7099.

The product of its (nonzero) digits is 12247200, while the sum is 60.

The spelling of 3855670691091 in words is "three trillion, eight hundred fifty-five billion, six hundred seventy million, six hundred ninety-one thousand, ninety-one".