127856447933 has 2 divisors, whose sum is σ = 127856447934. Its totient is φ = 127856447932.

The previous prime is 127856447867. The next prime is 127856447951. The reversal of 127856447933 is 339744658721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83528514169 + 44327933764 = 289013^2 + 210542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127856447933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127856447633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63928223966 + 63928223967.

It is an arithmetic number, because the mean of its divisors is an integer number (63928223967).

Almost surely, 2^127856447933 is an apocalyptic number.

It is an amenable number.

127856447933 is a deficient number, since it is larger than the sum of its proper divisors (1).

127856447933 is an equidigital number, since it uses as much as digits as its factorization.

127856447933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30481920, while the sum is 59.

The spelling of 127856447933 in words is "one hundred twenty-seven billion, eight hundred fifty-six million, four hundred forty-seven thousand, nine hundred thirty-three".