215615462655 has 128 divisors (see below), whose sum is σ = 384823296000. Its totient is φ = 102641333760.

The previous prime is 215615462651. The next prime is 215615462683. The reversal of 215615462655 is 556264516512.

It is not a de Polignac number, because 215615462655 - 2² = 215615462651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215615462651) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 147782316 + ... + 147783774.

It is an arithmetic number, because the mean of its divisors is an integer number (3006432000).

Almost surely, 2^215615462655 is an apocalyptic number.

215615462655 is a deficient number, since it is larger than the sum of its proper divisors (169207833345).

215615462655 is a wasteful number, since it uses less digits than its factorization.

215615462655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949.

The product of its digits is 2160000, while the sum is 48.

The spelling of 215615462655 in words is "two hundred fifteen billion, six hundred fifteen million, four hundred sixty-two thousand, six hundred fifty-five".