3561146506501 has 4 divisors (see below), whose sum is σ = 3572523971692. Its totient is φ = 3549769041312.

The previous prime is 3561146506493. The next prime is 3561146506679. The reversal of 3561146506501 is 1056056411653.

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 880725940900 + 2680420565601 = 938470^2 + 1637199^2 .

It is a cyclic number.

It is not a de Polignac number, because 3561146506501 - 2³ = 3561146506493 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 (3561146503501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5688732126 + ... + 5688732751.

It is an arithmetic number, because the mean of its divisors is an integer number (893130992923).

Almost surely, 2^{3561146506501} is an apocalyptic number.

It is an amenable number.

3561146506501 is a deficient number, since it is larger than the sum of its proper divisors (11377465191).

3561146506501 is a wasteful number, since it uses less digits than its factorization.

3561146506501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11377465190.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 3561146506501 in words is "three trillion, five hundred sixty-one billion, one hundred forty-six million, five hundred six thousand, five hundred one".