699872124928 has 28 divisors (see below), whose sum is σ = 1399658832630. Its totient is φ = 349936058368.

The previous prime is 699872124923. The next prime is 699872124961. The reversal of 699872124928 is 829421278996.

It can be written as a sum of positive squares in only one way, i.e., 673922781184 + 25949343744 = 820928^2 + 161088^2 .

It is not an unprimeable number, because it can be changed into a prime (699872124923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42708613 + ... + 42724996.

Almost surely, 2^699872124928 is an apocalyptic number.

It is an amenable number.

699872124928 is a deficient number, since it is larger than the sum of its proper divisors (699786707702).

699872124928 is an frugal number, since it uses more digits than its factorization.

699872124928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85433635 (or 85433611 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 67.

The spelling of 699872124928 in words is "six hundred ninety-nine billion, eight hundred seventy-two million, one hundred twenty-four thousand, nine hundred twenty-eight".