84806513865 has 16 divisors (see below), whose sum is σ = 150767136000. Its totient is φ = 45230140656.

The previous prime is 84806513861. The next prime is 84806513867. The reversal of 84806513865 is 56831560848.

84806513865 is a `hidden beast` number, since 8 + 48 + 0 + 6 + 513 + 86 + 5 = 666.

It is not a de Polignac number, because 84806513865 - 2² = 84806513861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84806513861) 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, 314098065 + ... + 314098334.

It is an arithmetic number, because the mean of its divisors is an integer number (9422946000).

Almost surely, 2^84806513865 is an apocalyptic number.

It is an amenable number.

84806513865 is a deficient number, since it is larger than the sum of its proper divisors (65960622135).

84806513865 is a wasteful number, since it uses less digits than its factorization.

84806513865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628196413 (or 628196407 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 84806513865 in words is "eighty-four billion, eight hundred six million, five hundred thirteen thousand, eight hundred sixty-five".