99651144781764 has 81 divisors (see below), whose sum is σ = 252832192188303. Its totient is φ = 33094043378064.

The previous prime is 99651144781757. The next prime is 99651144781781. The reversal of 99651144781764 is 46718744115699.

The square root of 99651144781764 is 9982542.

It is a perfect power (a square), and thus also a powerful number.

99651144781764 is a `hidden beast` number, since 9 + 9 + 6 + 5 + 1 + 1 + 447 + 8 + 176 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 99651144781692 and 99651144781701.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 16950353377 + ... + 16950359255.

Almost surely, 2^{99651144781764} is an apocalyptic number.

99651144781764 is the 9982542-nd square number.

It is an amenable number.

99651144781764 is an abundant number, since it is smaller than the sum of its proper divisors (153181047406539).

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

99651144781764 is an frugal number, since it uses more digits than its factorization.

99651144781764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12334 (or 6167 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 72.

The spelling of 99651144781764 in words is "ninety-nine trillion, six hundred fifty-one billion, one hundred forty-four million, seven hundred eighty-one thousand, seven hundred sixty-four".