215340425766 has 12 divisors (see below), whose sum is σ = 466570922532. Its totient is φ = 71780141916.

The previous prime is 215340425719. The next prime is 215340425777. The reversal of 215340425766 is 667524043512.

215340425766 is a `hidden beast` number, since 2 + 1 + 5 + 34 + 0 + 42 + 576 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5981678476 + ... + 5981678511.

It is an arithmetic number, because the mean of its divisors is an integer number (38880910211).

Almost surely, 2^215340425766 is an apocalyptic number.

215340425766 is an abundant number, since it is smaller than the sum of its proper divisors (251230496766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215340425766 is a wasteful number, since it uses less digits than its factorization.

215340425766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11963356995 (or 11963356992 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 215340425766 in words is "two hundred fifteen billion, three hundred forty million, four hundred twenty-five thousand, seven hundred sixty-six".