1555042030212 has 24 divisors (see below), whose sum is σ = 3958288804512. Its totient is φ = 471224857600.

The previous prime is 1555042030211. The next prime is 1555042030229. The reversal of 1555042030212 is 2120302405551.

It is a self number, because there is not a number n which added to its sum of digits gives 1555042030212.

It is not an unprimeable number, because it can be changed into a prime (1555042030211) 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 in 7 ways as a sum of consecutive naturals, for example, 5890310589 + ... + 5890310852.

It is an arithmetic number, because the mean of its divisors is an integer number (164928700188).

Almost surely, 2^{1555042030212} is an apocalyptic number.

1555042030212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1555042030212 is an abundant number, since it is smaller than the sum of its proper divisors (2403246774300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1555042030212 is a wasteful number, since it uses less digits than its factorization.

1555042030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11780621459 (or 11780621457 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 1555042030212 its reverse (2120302405551), we get a palindrome (3675344435763).

The spelling of 1555042030212 in words is "one trillion, five hundred fifty-five billion, forty-two million, thirty thousand, two hundred twelve".