284640316545 has 128 divisors (see below), whose sum is σ = 522768089088. Its totient is φ = 131246438400.

The previous prime is 284640316537. The next prime is 284640316547. The reversal of 284640316545 is 545613046482.

It is not a de Polignac number, because 284640316545 - 2³ = 284640316537 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 284640316494 and 284640316503.

It is not an unprimeable number, because it can be changed into a prime (284640316547) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 31471794 + ... + 31480836.

It is an arithmetic number, because the mean of its divisors is an integer number (4084125696).

Almost surely, 2^284640316545 is an apocalyptic number.

It is an amenable number.

284640316545 is a deficient number, since it is larger than the sum of its proper divisors (238127772543).

284640316545 is a wasteful number, since it uses less digits than its factorization.

284640316545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263.

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 284640316545 in words is "two hundred eighty-four billion, six hundred forty million, three hundred sixteen thousand, five hundred forty-five".