6151220071 has 2 divisors, whose sum is σ = 6151220072. Its totient is φ = 6151220070.

The previous prime is 6151220039. The next prime is 6151220087. The reversal of 6151220071 is 1700221516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6151220071 - 2⁵ = 6151220039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6151220771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3075610035 + 3075610036.

It is an arithmetic number, because the mean of its divisors is an integer number (3075610036).

Almost surely, 2^6151220071 is an apocalyptic number.

6151220071 is a deficient number, since it is larger than the sum of its proper divisors (1).

6151220071 is an equidigital number, since it uses as much as digits as its factorization.

6151220071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 6151220071 is about 78429.7142096030. The cubic root of 6151220071 is about 1832.2599480449.

Adding to 6151220071 its reverse (1700221516), we get a palindrome (7851441587).

The spelling of 6151220071 in words is "six billion, one hundred fifty-one million, two hundred twenty thousand, seventy-one".