215021947041 has 12 divisors (see below), whose sum is σ = 338822462160. Its totient is φ = 130316331480.

The previous prime is 215021947027. The next prime is 215021947051. The reversal of 215021947041 is 140749120512.

215021947041 is a `hidden beast` number, since 21 + 502 + 1 + 94 + 7 + 0 + 41 = 666.

It is not a de Polignac number, because 215021947041 - 2⁶ = 215021946977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215021946987 and 215021947005.

It is not an unprimeable number, because it can be changed into a prime (215021947051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1085969331 + ... + 1085969528.

It is an arithmetic number, because the mean of its divisors is an integer number (28235205180).

Almost surely, 2^215021947041 is an apocalyptic number.

It is an amenable number.

215021947041 is a deficient number, since it is larger than the sum of its proper divisors (123800515119).

215021947041 is a wasteful number, since it uses less digits than its factorization.

215021947041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171938876 (or 2171938873 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 215021947041 in words is "two hundred fifteen billion, twenty-one million, nine hundred forty-seven thousand, forty-one".