155768530057 has 24 divisors (see below), whose sum is σ = 184818916296. Its totient is φ = 130854866688.

The previous prime is 155768530039. The next prime is 155768530097. The reversal of 155768530057 is 750035867551.

It can be written as a sum of positive squares in 4 ways, for example, as 51845468416 + 103923061641 = 227696^2 + 322371^2 .

It is not a de Polignac number, because 155768530057 - 2¹¹ = 155768528009 is a prime.

It is a super-2 number, since 2×155768530057² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155768529986 and 155768530013.

It is not an unprimeable number, because it can be changed into a prime (155768530037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2401383 + ... + 2465395.

It is an arithmetic number, because the mean of its divisors is an integer number (7700788179).

Almost surely, 2^155768530057 is an apocalyptic number.

It is an amenable number.

155768530057 is a deficient number, since it is larger than the sum of its proper divisors (29050386239).

155768530057 is an equidigital number, since it uses as much as digits as its factorization.

155768530057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65017 (or 65010 counting only the distinct ones).

The product of its (nonzero) digits is 4410000, while the sum is 52.

The spelling of 155768530057 in words is "one hundred fifty-five billion, seven hundred sixty-eight million, five hundred thirty thousand, fifty-seven".