43565200051561 has 8 divisors (see below), whose sum is σ = 43660731519104. Its totient is φ = 43469674783920.

The previous prime is 43565200051553. The next prime is 43565200051619. The reversal of 43565200051561 is 16515000256534.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43565200051561 - 2³ = 43565200051553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43565200051661) 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, 12661630 + ... + 15730456.

It is an arithmetic number, because the mean of its divisors is an integer number (5457591439888).

Almost surely, 2^{43565200051561} is an apocalyptic number.

It is an amenable number.

43565200051561 is a deficient number, since it is larger than the sum of its proper divisors (95531467543).

43565200051561 is a wasteful number, since it uses less digits than its factorization.

43565200051561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099951.

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 43565200051561 in words is "forty-three trillion, five hundred sixty-five billion, two hundred million, fifty-one thousand, five hundred sixty-one".