155061881755 has 24 divisors (see below), whose sum is σ = 206439465456. Its totient is φ = 111718284480.

The previous prime is 155061881719. The next prime is 155061881759. The reversal of 155061881755 is 557188160551.

It is not a de Polignac number, because 155061881755 - 2⁹ = 155061881243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155061881759) 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 in 23 ways as a sum of consecutive naturals, for example, 1132932 + ... + 1262401.

It is an arithmetic number, because the mean of its divisors is an integer number (8601644394).

Almost surely, 2^155061881755 is an apocalyptic number.

155061881755 is a deficient number, since it is larger than the sum of its proper divisors (51377583701).

155061881755 is a wasteful number, since it uses less digits than its factorization.

155061881755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395467 (or 2395456 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 52.

The spelling of 155061881755 in words is "one hundred fifty-five billion, sixty-one million, eight hundred eighty-one thousand, seven hundred fifty-five".