1020441543541 has 32 divisors (see below), whose sum is σ = 1219022880768. Its totient is φ = 835945488000.

The previous prime is 1020441543529. The next prime is 1020441543551. The reversal of 1020441543541 is 1453451440201.

It is a happy number.

It is not a de Polignac number, because 1020441543541 - 2⁷ = 1020441543413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020441543497 and 1020441543506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020441543551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99037996 + ... + 99048298.

It is an arithmetic number, because the mean of its divisors is an integer number (38094465024).

Almost surely, 2^{1020441543541} is an apocalyptic number.

It is an amenable number.

1020441543541 is a deficient number, since it is larger than the sum of its proper divisors (198581337227).

1020441543541 is a wasteful number, since it uses less digits than its factorization.

1020441543541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17401.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 1020441543541 its reverse (1453451440201), we get a palindrome (2473892983742).

The spelling of 1020441543541 in words is "one trillion, twenty billion, four hundred forty-one million, five hundred forty-three thousand, five hundred forty-one".