165276851947 has 2 divisors, whose sum is σ = 165276851948. Its totient is φ = 165276851946.

The previous prime is 165276851921. The next prime is 165276851963. The reversal of 165276851947 is 749158672561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165276851947 is a prime.

It is not a weakly prime, because it can be changed into another prime (165276852947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82638425973 + 82638425974.

It is an arithmetic number, because the mean of its divisors is an integer number (82638425974).

Almost surely, 2^165276851947 is an apocalyptic number.

165276851947 is a deficient number, since it is larger than the sum of its proper divisors (1).

165276851947 is an equidigital number, since it uses as much as digits as its factorization.

165276851947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25401600, while the sum is 61.

The spelling of 165276851947 in words is "one hundred sixty-five billion, two hundred seventy-six million, eight hundred fifty-one thousand, nine hundred forty-seven".