215355553512 has 64 divisors (see below), whose sum is σ = 621882360000. Its totient is φ = 61420477440.

The previous prime is 215355553451. The next prime is 215355553537.

215355553512 is nontrivially palindromic in base 10.

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 15 ways as a sum of consecutive naturals, for example, 23987887 + ... + 23996862.

It is an arithmetic number, because the mean of its divisors is an integer number (9716911875).

Almost surely, 2^215355553512 is an apocalyptic number.

215355553512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

215355553512 is an abundant number, since it is smaller than the sum of its proper divisors (406526806488).

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

215355553512 is a wasteful number, since it uses less digits than its factorization.

215355553512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47984786 (or 47984782 counting only the distinct ones).

The product of its digits is 562500, while the sum is 42.

It can be divided in two parts, 215355 and 553512, that added together give a palindrome (768867).

The spelling of 215355553512 in words is "two hundred fifteen billion, three hundred fifty-five million, five hundred fifty-three thousand, five hundred twelve".