556215512655 has 32 divisors (see below), whose sum is σ = 984522843648. Its totient is φ = 265881929600.

The previous prime is 556215512653. The next prime is 556215512659.

556215512655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556215512655 - 2¹ = 556215512653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556215512653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23727744 + ... + 23751173.

It is an arithmetic number, because the mean of its divisors is an integer number (30766338864).

Almost surely, 2^556215512655 is an apocalyptic number.

556215512655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556215512655 is a deficient number, since it is larger than the sum of its proper divisors (428307330993).

556215512655 is a wasteful number, since it uses less digits than its factorization.

556215512655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47479007.

The product of its digits is 2250000, while the sum is 48.

The spelling of 556215512655 in words is "five hundred fifty-six billion, two hundred fifteen million, five hundred twelve thousand, six hundred fifty-five".