87309446244609 has 16 divisors (see below), whose sum is σ = 116477379165312. Its totient is φ = 58173907471488.

The previous prime is 87309446244599. The next prime is 87309446244661. The reversal of 87309446244609 is 90644264490378.

It is not a de Polignac number, because 87309446244609 - 2⁴ = 87309446244593 is a prime.

It is a super-2 number, since 2×87309446244609² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87309446244609.

It is not an unprimeable number, because it can be changed into a prime (87309446244679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180956524 + ... + 181438370.

It is an arithmetic number, because the mean of its divisors is an integer number (7279836197832).

Almost surely, 2^{87309446244609} is an apocalyptic number.

It is an amenable number.

87309446244609 is a deficient number, since it is larger than the sum of its proper divisors (29167932920703).

87309446244609 is a wasteful number, since it uses less digits than its factorization.

87309446244609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515336.

The product of its (nonzero) digits is 250822656, while the sum is 66.

The spelling of 87309446244609 in words is "eighty-seven trillion, three hundred nine billion, four hundred forty-six million, two hundred forty-four thousand, six hundred nine".