47599665309 has 60 divisors (see below), whose sum is σ = 83270929500. Its totient is φ = 27016924032.

The previous prime is 47599665271. The next prime is 47599665331. The reversal of 47599665309 is 90356699574.

47599665309 is a `hidden beast` number, since 4 + 7 + 5 + 9 + 96 + 6 + 530 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28720080900 + 18879584409 = 169470^2 + 137403^2 .

It is not a de Polignac number, because 47599665309 - 2¹¹ = 47599663261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47599665209) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 551137 + ... + 631625.

It is an arithmetic number, because the mean of its divisors is an integer number (1387848825).

Almost surely, 2^47599665309 is an apocalyptic number.

47599665309 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

47599665309 is a deficient number, since it is larger than the sum of its proper divisors (35671264191).

47599665309 is a wasteful number, since it uses less digits than its factorization.

47599665309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80664 (or 80648 counting only the distinct ones).

The product of its (nonzero) digits is 55112400, while the sum is 63.

The spelling of 47599665309 in words is "forty-seven billion, five hundred ninety-nine million, six hundred sixty-five thousand, three hundred nine".