155115275993 has 2 divisors, whose sum is σ = 155115275994. Its totient is φ = 155115275992.

The previous prime is 155115275963. The next prime is 155115276023. The reversal of 155115275993 is 399572511551.

155115275993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (155115275963) and next prime (155115276023).

It can be written as a sum of positive squares in only one way, i.e., 153760447129 + 1354828864 = 392123^2 + 36808^2 .

It is a cyclic number.

It is not a de Polignac number, because 155115275993 - 2¹⁴ = 155115259609 is a prime.

It is not a weakly prime, because it can be changed into another prime (155115275923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77557637996 + 77557637997.

It is an arithmetic number, because the mean of its divisors is an integer number (77557637997).

Almost surely, 2^155115275993 is an apocalyptic number.

It is an amenable number.

155115275993 is a deficient number, since it is larger than the sum of its proper divisors (1).

155115275993 is an equidigital number, since it uses as much as digits as its factorization.

155115275993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2126250, while the sum is 53.

The spelling of 155115275993 in words is "one hundred fifty-five billion, one hundred fifteen million, two hundred seventy-five thousand, nine hundred ninety-three".