202690844944 has 75 divisors (see below), whose sum is σ = 458338041317. Its totient is φ = 86829687168.

The previous prime is 202690844893. The next prime is 202690844947. The reversal of 202690844944 is 449448096202.

The square root of 202690844944 is 450212.

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., 95295690000 + 107395154944 = 308700^2 + 327712^2 .

It is a super-2 number, since 2×202690844944² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202690844891 and 202690844900.

It is not an unprimeable number, because it can be changed into a prime (202690844947) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 88240404 + ... + 88242700.

Almost surely, 2^202690844944 is an apocalyptic number.

202690844944 is the 450212-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202690844944

202690844944 is an abundant number, since it is smaller than the sum of its proper divisors (255647196373).

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

202690844944 is an frugal number, since it uses more digits than its factorization.

202690844944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630 (or 2306 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 202690844944 in words is "two hundred two billion, six hundred ninety million, eight hundred forty-four thousand, nine hundred forty-four".