155555504411012 has 24 divisors (see below), whose sum is σ = 276890212888800. Its totient is φ = 76444530687936.

The previous prime is 155555504411009. The next prime is 155555504411089. The reversal of 155555504411012 is 210114405555551.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63249962 + ... + 65663297.

It is an arithmetic number, because the mean of its divisors is an integer number (11537092203700).

Almost surely, 2^{155555504411012} is an apocalyptic number.

It is an amenable number.

155555504411012 is a deficient number, since it is larger than the sum of its proper divisors (121334708477788).

155555504411012 is a wasteful number, since it uses less digits than its factorization.

155555504411012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128918435 (or 128918433 counting only the distinct ones).

The product of its (nonzero) digits is 500000, while the sum is 44.

Adding to 155555504411012 its reverse (210114405555551), we get a palindrome (365669909966563).

The spelling of 155555504411012 in words is "one hundred fifty-five trillion, five hundred fifty-five billion, five hundred four million, four hundred eleven thousand, twelve".