7161620071 has 4 divisors (see below), whose sum is σ = 7296745032. Its totient is φ = 7026495112.

The previous prime is 7161620047. The next prime is 7161620077. The reversal of 7161620071 is 1700261617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1700261617 = 28949 ⋅58733.

It is a cyclic number.

It is not a de Polignac number, because 7161620071 - 2¹⁹ = 7161095783 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 (7161620077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67562401 + ... + 67562506.

It is an arithmetic number, because the mean of its divisors is an integer number (1824186258).

Almost surely, 2^7161620071 is an apocalyptic number.

7161620071 is a deficient number, since it is larger than the sum of its proper divisors (135124961).

7161620071 is a wasteful number, since it uses less digits than its factorization.

7161620071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135124960.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 7161620071 is about 84626.3556523616. The cubic root of 7161620071 is about 1927.5415977695.

Adding to 7161620071 its reverse (1700261617), we get a palindrome (8861881688).

The spelling of 7161620071 in words is "seven billion, one hundred sixty-one million, six hundred twenty thousand, seventy-one".