155672135533 has 2 divisors, whose sum is σ = 155672135534. Its totient is φ = 155672135532.

The previous prime is 155672135447. The next prime is 155672135561. The reversal of 155672135533 is 335531276551.

155672135533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150126801444 + 5545334089 = 387462^2 + 74467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155672135533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155672132533) 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, 77836067766 + 77836067767.

It is an arithmetic number, because the mean of its divisors is an integer number (77836067767).

Almost surely, 2^155672135533 is an apocalyptic number.

It is an amenable number.

155672135533 is a deficient number, since it is larger than the sum of its proper divisors (1).

155672135533 is an equidigital number, since it uses as much as digits as its factorization.

155672135533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1417500, while the sum is 46.

The spelling of 155672135533 in words is "one hundred fifty-five billion, six hundred seventy-two million, one hundred thirty-five thousand, five hundred thirty-three".