981541541010202 has 16 divisors (see below), whose sum is σ = 1472499709438824. Its totient is φ = 490708308160000.

The previous prime is 981541541010097. The next prime is 981541541010203. The reversal of 981541541010202 is 202010145145189.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 924184380960801 + 57357160049401 = 30400401^2 + 7573451^2 .

It is not an unprimeable number, because it can be changed into a prime (981541541010203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550612002 + ... + 552391762.

Almost surely, 2^{981541541010202} is an apocalyptic number.

981541541010202 is a deficient number, since it is larger than the sum of its proper divisors (490958168428622).

981541541010202 is a wasteful number, since it uses less digits than its factorization.

981541541010202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814705.

The product of its (nonzero) digits is 115200, while the sum is 43.

The spelling of 981541541010202 in words is "nine hundred eighty-one trillion, five hundred forty-one billion, five hundred forty-one million, ten thousand, two hundred two".