99920035992001 has 3 divisors (see below), whose sum is σ = 99920045988003. Its totient is φ = 99920025996000.

The previous prime is 99920035991969. The next prime is 99920035992031. The reversal of 99920035992001 is 10029953002999.

The square root of 99920035992001 is 9996001.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 95766755030401 + 4153280961600 = 9786049^2 + 2037960^2 .

It is not a de Polignac number, because 99920035992001 - 2⁵ = 99920035991969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99920035992031) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4998001 + ... + 14994001.

It is an arithmetic number, because the mean of its divisors is an integer number (33306681996001).

Almost surely, 2^{99920035992001} is an apocalyptic number.

99920035992001 is the 9996001-st square number.

99920035992001 is the 4998001-st centered octagonal number.

It is an amenable number.

99920035992001 is a deficient number, since it is larger than the sum of its proper divisors (9996002).

99920035992001 is an frugal number, since it uses more digits than its factorization.

99920035992001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19992002 (or 9996001 counting only the distinct ones).

The product of its (nonzero) digits is 3542940, while the sum is 58.

It can be divided in two parts, 9992003 and 5992001, that added together give a square (15984004 = 3998²).

The spelling of 99920035992001 in words is "ninety-nine trillion, nine hundred twenty billion, thirty-five million, nine hundred ninety-two thousand, one".