7071381381 has 16 divisors (see below), whose sum is σ = 9638496000. Its totient is φ = 4609456128.

The previous prime is 7071381341. The next prime is 7071381407. The reversal of 7071381381 is 1831831707.

It is not a de Polignac number, because 7071381381 - 2⁷ = 7071381253 is a prime.

It is a super-2 number, since 2×7071381381² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7071381311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124005 + ... + 171813.

It is an arithmetic number, because the mean of its divisors is an integer number (602406000).

Almost surely, 2^7071381381 is an apocalyptic number.

It is an amenable number.

7071381381 is a deficient number, since it is larger than the sum of its proper divisors (2567114619).

7071381381 is a wasteful number, since it uses less digits than its factorization.

7071381381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48908.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 7071381381 is about 84091.5059979306. The cubic root of 7071381381 is about 1919.4114751665.

The spelling of 7071381381 in words is "seven billion, seventy-one million, three hundred eighty-one thousand, three hundred eighty-one".