155536131277 has 2 divisors, whose sum is σ = 155536131278. Its totient is φ = 155536131276.

The previous prime is 155536131239. The next prime is 155536131323. The reversal of 155536131277 is 772131635551.

It is an a-pointer prime, because the next prime (155536131323) can be obtained adding 155536131277 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98190729316 + 57345401961 = 313354^2 + 239469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155536131277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155536137277) 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, 77768065638 + 77768065639.

It is an arithmetic number, because the mean of its divisors is an integer number (77768065639).

Almost surely, 2^155536131277 is an apocalyptic number.

It is an amenable number.

155536131277 is a deficient number, since it is larger than the sum of its proper divisors (1).

155536131277 is an equidigital number, since it uses as much as digits as its factorization.

155536131277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 661500, while the sum is 46.

The spelling of 155536131277 in words is "one hundred fifty-five billion, five hundred thirty-six million, one hundred thirty-one thousand, two hundred seventy-seven".