3911338533381 has 16 divisors (see below), whose sum is σ = 5216794650624. Its totient is φ = 2606720873904.

The previous prime is 3911338533313. The next prime is 3911338533391. The reversal of 3911338533381 is 1833358331193.

It is a happy number.

3911338533381 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 3911338533381 - 2⁹ = 3911338532869 is a prime.

It is a super-2 number, since 2×3911338533381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3911338533391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171485880 + ... + 171508686.

It is an arithmetic number, because the mean of its divisors is an integer number (326049665664).

Almost surely, 2^{3911338533381} is an apocalyptic number.

It is an amenable number.

3911338533381 is a deficient number, since it is larger than the sum of its proper divisors (1305456117243).

3911338533381 is a wasteful number, since it uses less digits than its factorization.

3911338533381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38680.

The product of its digits is 2099520, while the sum is 51.

The spelling of 3911338533381 in words is "three trillion, nine hundred eleven billion, three hundred thirty-eight million, five hundred thirty-three thousand, three hundred eighty-one".