7660113381 has 20 divisors (see below), whose sum is σ = 11473608652. Its totient is φ = 5093031168.

The previous prime is 7660113379. The next prime is 7660113449. The reversal of 7660113381 is 1833110667.

7660113381 is a `hidden beast` number, since 7 + 6 + 601 + 13 + 38 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1985504481 + 5674608900 = 44559^2 + 75330^2 .

It is not a de Polignac number, because 7660113381 - 2¹ = 7660113379 is a prime.

It is a super-2 number, since 2×7660113381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7660113301) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 96556 + ... + 156981.

Almost surely, 2^7660113381 is an apocalyptic number.

It is an amenable number.

7660113381 is a deficient number, since it is larger than the sum of its proper divisors (3813495271).

7660113381 is a wasteful number, since it uses less digits than its factorization.

7660113381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253922 (or 253913 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 7660113381 is about 87522.0736785869. The cubic root of 7660113381 is about 1971.2652492907.

The spelling of 7660113381 in words is "seven billion, six hundred sixty million, one hundred thirteen thousand, three hundred eighty-one".