207675745857 has 12 divisors (see below), whose sum is σ = 311086302800. Its totient is φ = 138450497076.

The previous prime is 207675745793. The next prime is 207675745891. The reversal of 207675745857 is 758547576702.

It is a happy number.

207675745857 is a `hidden beast` number, since 2 + 0 + 7 + 6 + 7 + 574 + 5 + 8 + 57 = 666.

It is not a de Polignac number, because 207675745857 - 2⁶ = 207675745793 is a prime.

It is a super-2 number, since 2×207675745857² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 207675745794 and 207675745803.

It is not an unprimeable number, because it can be changed into a prime (207675749857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 427316107 + ... + 427316592.

Almost surely, 2^207675745857 is an apocalyptic number.

207675745857 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

207675745857 is a deficient number, since it is larger than the sum of its proper divisors (103410556943).

207675745857 is an frugal number, since it uses more digits than its factorization.

207675745857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854632714 (or 854632702 counting only the distinct ones).

The product of its (nonzero) digits is 115248000, while the sum is 63.

The spelling of 207675745857 in words is "two hundred seven billion, six hundred seventy-five million, seven hundred forty-five thousand, eight hundred fifty-seven".