6735993381 has 72 divisors (see below), whose sum is σ = 10855852800. Its totient is φ = 4021280640.

The previous prime is 6735993349. The next prime is 6735993403. The reversal of 6735993381 is 1833995376.

It is not a de Polignac number, because 6735993381 - 2⁵ = 6735993349 is a prime.

It is a super-2 number, since 2×6735993381² = 90747213657751622322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6735993281) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 7329240 + ... + 7330158.

Almost surely, 2^6735993381 is an apocalyptic number.

6735993381 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6735993381 is a deficient number, since it is larger than the sum of its proper divisors (4119859419).

6735993381 is a wasteful number, since it uses less digits than its factorization.

6735993381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091 (or 1075 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The square root of 6735993381 is about 82073.0977909327. The cubic root of 6735993381 is about 1888.5734670992.

The spelling of 6735993381 in words is "six billion, seven hundred thirty-five million, nine hundred ninety-three thousand, three hundred eighty-one".