207805338987828 has 12 divisors (see below), whose sum is σ = 484879124304960. Its totient is φ = 69268446329272.

The previous prime is 207805338987769. The next prime is 207805338987929. The reversal of 207805338987828 is 828789833508702.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×207805338987828² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8658555791148 + ... + 8658555791171.

It is an arithmetic number, because the mean of its divisors is an integer number (40406593692080).

Almost surely, 2^{207805338987828} is an apocalyptic number.

It is an amenable number.

207805338987828 is an abundant number, since it is smaller than the sum of its proper divisors (277073785317132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

207805338987828 is a wasteful number, since it uses less digits than its factorization.

207805338987828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17317111582326 (or 17317111582324 counting only the distinct ones).

The product of its (nonzero) digits is 2601123840, while the sum is 78.

The spelling of 207805338987828 in words is "two hundred seven trillion, eight hundred five billion, three hundred thirty-eight million, nine hundred eighty-seven thousand, eight hundred twenty-eight".