155111327051533 has 4 divisors (see below), whose sum is σ = 161855297792928. Its totient is φ = 148367356310140.

The previous prime is 155111327051519. The next prime is 155111327051777. The reversal of 155111327051533 is 335150723111551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 155111327051533 - 2²¹ = 155111324954381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155111327051533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155111327051033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3371985370663 + ... + 3371985370708.

It is an arithmetic number, because the mean of its divisors is an integer number (40463824448232).

Almost surely, 2^{155111327051533} is an apocalyptic number.

It is an amenable number.

155111327051533 is a deficient number, since it is larger than the sum of its proper divisors (6743970741395).

155111327051533 is an equidigital number, since it uses as much as digits as its factorization.

155111327051533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6743970741394.

The product of its (nonzero) digits is 236250, while the sum is 43.

The spelling of 155111327051533 in words is "one hundred fifty-five trillion, one hundred eleven billion, three hundred twenty-seven million, fifty-one thousand, five hundred thirty-three".