84217056351 has 16 divisors (see below), whose sum is σ = 113383411200. Its totient is φ = 55598115968.

The previous prime is 84217056349. The next prime is 84217056353. The reversal of 84217056351 is 15365071248.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84217056349) and next prime (84217056353).

It is a cyclic number.

It is not a de Polignac number, because 84217056351 - 2¹ = 84217056349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84217056353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787210 + ... + 887768.

It is an arithmetic number, because the mean of its divisors is an integer number (7086463200).

Almost surely, 2^84217056351 is an apocalyptic number.

84217056351 is a deficient number, since it is larger than the sum of its proper divisors (29166354849).

84217056351 is a wasteful number, since it uses less digits than its factorization.

84217056351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103278.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 84217056351 in words is "eighty-four billion, two hundred seventeen million, fifty-six thousand, three hundred fifty-one".