893242216561 has 4 divisors (see below), whose sum is σ = 895730356800. Its totient is φ = 890754076324.

The previous prime is 893242216463. The next prime is 893242216567. The reversal of 893242216561 is 165612242398.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 893242216561 - 2²³ = 893233827953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (893242216567) 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, 1244069581 + ... + 1244070298.

It is an arithmetic number, because the mean of its divisors is an integer number (223932589200).

Almost surely, 2^893242216561 is an apocalyptic number.

It is an amenable number.

893242216561 is a deficient number, since it is larger than the sum of its proper divisors (2488140239).

893242216561 is a wasteful number, since it uses less digits than its factorization.

893242216561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488140238.

The product of its digits is 1244160, while the sum is 49.

The spelling of 893242216561 in words is "eight hundred ninety-three billion, two hundred forty-two million, two hundred sixteen thousand, five hundred sixty-one".