22505012434661 has 4 divisors (see below), whose sum is σ = 23483491236192. Its totient is φ = 21526533633132.

The previous prime is 22505012434651. The next prime is 22505012434679. The reversal of 22505012434661 is 16643421050522.

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 22505012434661 - 2¹⁰ = 22505012433637 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 (22505012434621) 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, 489239400731 + ... + 489239400776.

It is an arithmetic number, because the mean of its divisors is an integer number (5870872809048).

Almost surely, 2^{22505012434661} is an apocalyptic number.

It is an amenable number.

22505012434661 is a deficient number, since it is larger than the sum of its proper divisors (978478801531).

22505012434661 is an equidigital number, since it uses as much as digits as its factorization.

22505012434661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978478801530.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 22505012434661 in words is "twenty-two trillion, five hundred five billion, twelve million, four hundred thirty-four thousand, six hundred sixty-one".