22143551461 has 16 divisors (see below), whose sum is σ = 23935927680. Its totient is φ = 20431924480.

The previous prime is 22143551447. The next prime is 22143551557. The reversal of 22143551461 is 16415534122.

It is a cyclic number.

It is not a de Polignac number, because 22143551461 - 2¹¹ = 22143549413 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 (22143551861) 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, 47995 + ... + 215848.

It is an arithmetic number, because the mean of its divisors is an integer number (1495995480).

Almost surely, 2^22143551461 is an apocalyptic number.

It is an amenable number.

22143551461 is a deficient number, since it is larger than the sum of its proper divisors (1792376219).

22143551461 is a wasteful number, since it uses less digits than its factorization.

22143551461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263996.

The product of its digits is 28800, while the sum is 34.

The spelling of 22143551461 in words is "twenty-two billion, one hundred forty-three million, five hundred fifty-one thousand, four hundred sixty-one".