3541613446021 has 6 divisors (see below), whose sum is σ = 4119836049510. Its totient is φ = 3035668667976.

The previous prime is 3541613445983. The next prime is 3541613446027. The reversal of 3541613446021 is 1206443161453.

It can be written as a sum of positive squares in only one way, i.e., 3519638644900 + 21974801121 = 1876070^2 + 148239^2 .

It is not a de Polignac number, because 3541613446021 - 2⁷ = 3541613445893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3541613446027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36138912666 + ... + 36138912763.

It is an arithmetic number, because the mean of its divisors is an integer number (686639341585).

Almost surely, 2^{3541613446021} is an apocalyptic number.

It is an amenable number.

3541613446021 is a deficient number, since it is larger than the sum of its proper divisors (578222603489).

3541613446021 is an equidigital number, since it uses as much as digits as its factorization.

3541613446021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72277825443 (or 72277825436 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 3541613446021 in words is "three trillion, five hundred forty-one billion, six hundred thirteen million, four hundred forty-six thousand, twenty-one".