215563741071 has 32 divisors (see below), whose sum is σ = 350455362048. Its totient is φ = 115048427520.

The previous prime is 215563741069. The next prime is 215563741117. The reversal of 215563741071 is 170147365512.

215563741071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215563741071 - 2¹ = 215563741069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215563741171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2257890 + ... + 2351423.

It is an arithmetic number, because the mean of its divisors is an integer number (10951730064).

Almost surely, 2^215563741071 is an apocalyptic number.

215563741071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

215563741071 is a deficient number, since it is larger than the sum of its proper divisors (134891620977).

215563741071 is a wasteful number, since it uses less digits than its factorization.

215563741071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609471.

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 215563741071 in words is "two hundred fifteen billion, five hundred sixty-three million, seven hundred forty-one thousand, seventy-one".