215435226440655 has 48 divisors (see below), whose sum is σ = 414723433980960. Its totient is φ = 106060419159552.

The previous prime is 215435226440591. The next prime is 215435226440669. The reversal of 215435226440655 is 556044622534512.

215435226440655 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 3 + 5 + 226 + 4 + 406 + 5 + 5 = 666.

It is not a de Polignac number, because 215435226440655 - 2⁶ = 215435226440591 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4721327754 + ... + 4721373383.

It is an arithmetic number, because the mean of its divisors is an integer number (8640071541270).

Almost surely, 2^{215435226440655} is an apocalyptic number.

215435226440655 is a deficient number, since it is larger than the sum of its proper divisors (199288207540305).

215435226440655 is a wasteful number, since it uses less digits than its factorization.

215435226440655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9442701177 (or 9442701158 counting only the distinct ones).

The product of its (nonzero) digits is 34560000, while the sum is 54.

The spelling of 215435226440655 in words is "two hundred fifteen trillion, four hundred thirty-five billion, two hundred twenty-six million, four hundred forty thousand, six hundred fifty-five".