207676685781 has 48 divisors (see below), whose sum is σ = 319991992320. Its totient is φ = 134522020080.

The previous prime is 207676685773. The next prime is 207676685807. The reversal of 207676685781 is 187586676702.

It is not a de Polignac number, because 207676685781 - 2³ = 207676685773 is a prime.

It is a super-2 number, since 2×207676685781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207676685681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1943730 + ... + 2047788.

It is an arithmetic number, because the mean of its divisors is an integer number (6666499840).

Almost surely, 2^207676685781 is an apocalyptic number.

It is an amenable number.

207676685781 is a deficient number, since it is larger than the sum of its proper divisors (112315306539).

207676685781 is a wasteful number, since it uses less digits than its factorization.

207676685781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104308 (or 104296 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 63.

The spelling of 207676685781 in words is "two hundred seven billion, six hundred seventy-six million, six hundred eighty-five thousand, seven hundred eighty-one".