1555134020012 has 48 divisors (see below), whose sum is σ = 2881213440000. Its totient is φ = 732405421440.

The previous prime is 1555134019997. The next prime is 1555134020023. The reversal of 1555134020012 is 2100204315551.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28990688 + ... + 29044280.

It is an arithmetic number, because the mean of its divisors is an integer number (60025280000).

Almost surely, 2^{1555134020012} is an apocalyptic number.

It is an amenable number.

1555134020012 is a deficient number, since it is larger than the sum of its proper divisors (1326079419988).

1555134020012 is a wasteful number, since it uses less digits than its factorization.

1555134020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55806 (or 55804 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 1555134020012 its reverse (2100204315551), we get a palindrome (3655338335563).

The spelling of 1555134020012 in words is "one trillion, five hundred fifty-five billion, one hundred thirty-four million, twenty thousand, twelve".