207019172644 has 6 divisors (see below), whose sum is σ = 362283552134. Its totient is φ = 103509586320.

The previous prime is 207019172627. The next prime is 207019172653. The reversal of 207019172644 is 446271910702.

It can be written as a sum of positive squares in only one way, i.e., 182253855744 + 24765316900 = 426912^2 + 157370^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 207019172644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25877396577 + ... + 25877396584.

Almost surely, 2^207019172644 is an apocalyptic number.

It is an amenable number.

207019172644 is a deficient number, since it is larger than the sum of its proper divisors (155264379490).

207019172644 is a wasteful number, since it uses less digits than its factorization.

207019172644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51754793165 (or 51754793163 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 207019172644 in words is "two hundred seven billion, nineteen million, one hundred seventy-two thousand, six hundred forty-four".