82207784907 has 24 divisors (see below), whose sum is σ = 119988989120. Its totient is φ = 54233420400.

The previous prime is 82207784801. The next prime is 82207784947. The reversal of 82207784907 is 70948770228.

82207784907 is a `hidden beast` number, since 82 + 2 + 0 + 7 + 78 + 490 + 7 = 666.

It is not a de Polignac number, because 82207784907 - 2¹¹ = 82207782859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82207784947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277032 + ... + 491082.

Almost surely, 2^82207784907 is an apocalyptic number.

82207784907 is a deficient number, since it is larger than the sum of its proper divisors (37781204213).

82207784907 is a wasteful number, since it uses less digits than its factorization.

82207784907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214503 (or 214500 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

Adding to 82207784907 its sum of digits (54), we get a square (82207784961 = 286719²).

The spelling of 82207784907 in words is "eighty-two billion, two hundred seven million, seven hundred eighty-four thousand, nine hundred seven".