64206214255215 has 24 divisors (see below), whose sum is σ = 117148180397040. Its totient is φ = 32441034570624.

The previous prime is 64206214255213. The next prime is 64206214255321. The reversal of 64206214255215 is 51255241260246.

64206214255215 is a `hidden beast` number, since 6 + 4 + 2 + 0 + 6 + 2 + 1 + 425 + 5 + 215 = 666.

It is not a de Polignac number, because 64206214255215 - 2¹ = 64206214255213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64206214255213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37547492862 + ... + 37547494571.

It is an arithmetic number, because the mean of its divisors is an integer number (4881174183210).

Almost surely, 2^{64206214255215} is an apocalyptic number.

64206214255215 is a deficient number, since it is larger than the sum of its proper divisors (52941966141825).

64206214255215 is a wasteful number, since it uses less digits than its factorization.

64206214255215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75094987463 (or 75094987460 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 64206214255215 in words is "sixty-four trillion, two hundred six billion, two hundred fourteen million, two hundred fifty-five thousand, two hundred fifteen".