155085038749 has 2 divisors, whose sum is σ = 155085038750. Its totient is φ = 155085038748.

The previous prime is 155085038743. The next prime is 155085038777. The reversal of 155085038749 is 947830580551.

155085038749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154227427524 + 857611225 = 392718^2 + 29285^2 .

It is a cyclic number.

It is not a de Polignac number, because 155085038749 - 2⁷ = 155085038621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155085038749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155085038743) 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, 77542519374 + 77542519375.

It is an arithmetic number, because the mean of its divisors is an integer number (77542519375).

Almost surely, 2^155085038749 is an apocalyptic number.

It is an amenable number.

155085038749 is a deficient number, since it is larger than the sum of its proper divisors (1).

155085038749 is an equidigital number, since it uses as much as digits as its factorization.

155085038749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048000, while the sum is 55.

The spelling of 155085038749 in words is "one hundred fifty-five billion, eighty-five million, thirty-eight thousand, seven hundred forty-nine".