10206667720 has 16 divisors (see below), whose sum is σ = 22965002460. Its totient is φ = 4082667072.

The previous prime is 10206667717. The next prime is 10206667789. The reversal of 10206667720 is 2776660201.

It can be written as a sum of positive squares in 2 ways, for example, as 10205444484 + 1223236 = 101022^2 + 1106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10206667720.

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, 127583307 + ... + 127583386.

Almost surely, 2^10206667720 is an apocalyptic number.

10206667720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10206667720 is an abundant number, since it is smaller than the sum of its proper divisors (12758334740).

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

10206667720 is a wasteful number, since it uses less digits than its factorization.

10206667720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255166704 (or 255166700 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 10206667720 in words is "ten billion, two hundred six million, six hundred sixty-seven thousand, seven hundred twenty".