99933890929636 has 27 divisors (see below), whose sum is σ = 180708840810057. Its totient is φ = 48354808613520.

The previous prime is 99933890929633. The next prime is 99933890929657. The reversal of 99933890929636 is 63692909833999.

It is a happy number.

The square root of 99933890929636 is 9996694.

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

It can be written as a sum of positive squares in only one way, i.e., 3986850824100 + 95947040105536 = 1996710^2 + 9795256^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99933890929633) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 619714410 + ... + 619875646.

Almost surely, 2^{99933890929636} is an apocalyptic number.

99933890929636 is the 9996694-th square number.

It is an amenable number.

99933890929636 is a deficient number, since it is larger than the sum of its proper divisors (80774949880421).

99933890929636 is an frugal number, since it uses more digits than its factorization.

99933890929636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322540 (or 161270 counting only the distinct ones).

The product of its (nonzero) digits is 8264970432, while the sum is 85.

The spelling of 99933890929636 in words is "ninety-nine trillion, nine hundred thirty-three billion, eight hundred ninety million, nine hundred twenty-nine thousand, six hundred thirty-six".