7071378137 has 8 divisors (see below), whose sum is σ = 7206272136. Its totient is φ = 6936538752.

The previous prime is 7071378121. The next prime is 7071378151. The reversal of 7071378137 is 7318731707.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1479479296 + 5591898841 = 38464^2 + 74779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7071378137 - 2⁴ = 7071378121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7071378107) 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 7 ways as a sum of consecutive naturals, for example, 328613 + ... + 349469.

It is an arithmetic number, because the mean of its divisors is an integer number (900784017).

Almost surely, 2^7071378137 is an apocalyptic number.

It is an amenable number.

7071378137 is a deficient number, since it is larger than the sum of its proper divisors (134893999).

7071378137 is a wasteful number, since it uses less digits than its factorization.

7071378137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27307.

The product of its (nonzero) digits is 172872, while the sum is 44.

The square root of 7071378137 is about 84091.4867094167. The cubic root of 7071378137 is about 1919.4111816561.

The spelling of 7071378137 in words is "seven billion, seventy-one million, three hundred seventy-eight thousand, one hundred thirty-seven".