7071661157 has 16 divisors (see below), whose sum is σ = 7864895232. Its totient is φ = 6303635520.

The previous prime is 7071661133. The next prime is 7071661229. The reversal of 7071661157 is 7511661707.

7071661157 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7071661157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7071661657) 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, 1424123 + ... + 1429079.

It is an arithmetic number, because the mean of its divisors is an integer number (491555952).

Almost surely, 2^7071661157 is an apocalyptic number.

It is an amenable number.

7071661157 is a deficient number, since it is larger than the sum of its proper divisors (793234075).

7071661157 is a wasteful number, since it uses less digits than its factorization.

7071661157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7468.

The product of its (nonzero) digits is 61740, while the sum is 41.

The square root of 7071661157 is about 84093.1695026415. The cubic root of 7071661157 is about 1919.4367883811.

The spelling of 7071661157 in words is "seven billion, seventy-one million, six hundred sixty-one thousand, one hundred fifty-seven".