155072056771 has 2 divisors, whose sum is σ = 155072056772. Its totient is φ = 155072056770.

The previous prime is 155072056757. The next prime is 155072056793. The reversal of 155072056771 is 177650270551.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155072056771 is a prime.

It is not a weakly prime, because it can be changed into another prime (155072056721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77536028385 + 77536028386.

It is an arithmetic number, because the mean of its divisors is an integer number (77536028386).

Almost surely, 2^155072056771 is an apocalyptic number.

155072056771 is a deficient number, since it is larger than the sum of its proper divisors (1).

155072056771 is an equidigital number, since it uses as much as digits as its factorization.

155072056771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 514500, while the sum is 46.

The spelling of 155072056771 in words is "one hundred fifty-five billion, seventy-two million, fifty-six thousand, seven hundred seventy-one".