22365505420661 has 16 divisors (see below), whose sum is σ = 24175537951488. Its totient is φ = 20568297859200.

The previous prime is 22365505420631. The next prime is 22365505420669. The reversal of 22365505420661 is 16602450556322.

It is not a de Polignac number, because 22365505420661 - 2⁶ = 22365505420597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22365505420669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22330256 + ... + 23310326.

It is an arithmetic number, because the mean of its divisors is an integer number (1510971121968).

Almost surely, 2^{22365505420661} is an apocalyptic number.

It is an amenable number.

22365505420661 is a deficient number, since it is larger than the sum of its proper divisors (1810032530827).

22365505420661 is a wasteful number, since it uses less digits than its factorization.

22365505420661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986612.

The product of its (nonzero) digits is 2592000, while the sum is 47.

Adding to 22365505420661 its reverse (16602450556322), we get a palindrome (38967955976983).

The spelling of 22365505420661 in words is "twenty-two trillion, three hundred sixty-five billion, five hundred five million, four hundred twenty thousand, six hundred sixty-one".