215994404908 has 6 divisors (see below), whose sum is σ = 377990208596. Its totient is φ = 107997202452.

The previous prime is 215994404861. The next prime is 215994404911. The reversal of 215994404908 is 809404499512.

It is a super-2 number, since 2×215994404908² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 26999300610 + ... + 26999300617.

Almost surely, 2^215994404908 is an apocalyptic number.

It is an amenable number.

215994404908 is a deficient number, since it is larger than the sum of its proper divisors (161995803688).

215994404908 is a wasteful number, since it uses less digits than its factorization.

215994404908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53998601231 (or 53998601229 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 215994404908 in words is "two hundred fifteen billion, nine hundred ninety-four million, four hundred four thousand, nine hundred eight".