99962836561 has 45 divisors (see below), whose sum is σ = 122770383945. Its totient is φ = 81154258920.

The previous prime is 99962836549. The next prime is 99962836577. The reversal of 99962836561 is 16563826999.

The square root of 99962836561 is 316169.

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

It is not a de Polignac number, because 99962836561 - 2⁵ = 99962836529 is a prime.

It is a super-3 number, since 3×99962836561³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99962836493 and 99962836502.

It is not an unprimeable number, because it can be changed into a prime (99962836511) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2126868840 + ... + 2126868886.

Almost surely, 2^99962836561 is an apocalyptic number.

99962836561 is the 316169-th square number.

99962836561 is the 158085-th centered octagonal number.

It is an amenable number.

99962836561 is a deficient number, since it is larger than the sum of its proper divisors (22807547384).

99962836561 is an frugal number, since it uses more digits than its factorization.

99962836561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 85 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 64.

Multiplying 99962836561 by its sum of digits (64), we get a square (6397621539904 = 2529352²).

The spelling of 99962836561 in words is "ninety-nine billion, nine hundred sixty-two million, eight hundred thirty-six thousand, five hundred sixty-one".