555215121012 has 12 divisors (see below), whose sum is σ = 1295501949056. Its totient is φ = 185071707000.

The previous prime is 555215120939. The next prime is 555215121023. The reversal of 555215121012 is 210121512555.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23133963364 + ... + 23133963387.

Almost surely, 2^555215121012 is an apocalyptic number.

It is an amenable number.

555215121012 is an abundant number, since it is smaller than the sum of its proper divisors (740286828044).

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

555215121012 is a wasteful number, since it uses less digits than its factorization.

555215121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46267926758 (or 46267926756 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 30.

Adding to 555215121012 its reverse (210121512555), we get a palindrome (765336633567).

The spelling of 555215121012 in words is "five hundred fifty-five billion, two hundred fifteen million, one hundred twenty-one thousand, twelve".