84688510249 has 16 divisors (see below), whose sum is σ = 98217190656. Its totient is φ = 71518809600.

The previous prime is 84688510229. The next prime is 84688510271. The reversal of 84688510249 is 94201588648.

It is a de Polignac number, because none of the positive numbers 2^k-84688510249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84688510249.

It is not an unprimeable number, because it can be changed into a prime (84688510229) 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, 678529 + ... + 793585.

It is an arithmetic number, because the mean of its divisors is an integer number (6138574416).

Almost surely, 2^84688510249 is an apocalyptic number.

It is an amenable number.

84688510249 is a deficient number, since it is larger than the sum of its proper divisors (13528680407).

84688510249 is a wasteful number, since it uses less digits than its factorization.

84688510249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116616.

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 84688510249 in words is "eighty-four billion, six hundred eighty-eight million, five hundred ten thousand, two hundred forty-nine".