1501042045541 has 4 divisors (see below), whose sum is σ = 1503014506284. Its totient is φ = 1499069584800.

The previous prime is 1501042045523. The next prime is 1501042045561. The reversal of 1501042045541 is 1455402401051.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261048443041 + 1239993602500 = 510929^2 + 1113550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1501042045541 - 2²² = 1501037851237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1501042045498 and 1501042045507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1501042045501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986229230 + ... + 986230751.

It is an arithmetic number, because the mean of its divisors is an integer number (375753626571).

Almost surely, 2^{1501042045541} is an apocalyptic number.

It is an amenable number.

1501042045541 is a deficient number, since it is larger than the sum of its proper divisors (1972460743).

1501042045541 is an equidigital number, since it uses as much as digits as its factorization.

1501042045541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972460742.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 1501042045541 its reverse (1455402401051), we get a palindrome (2956444446592).

The spelling of 1501042045541 in words is "one trillion, five hundred one billion, forty-two million, forty-five thousand, five hundred forty-one".