22403523649 has 16 divisors (see below), whose sum is σ = 24262687120. Its totient is φ = 20563994880.

The previous prime is 22403523647. The next prime is 22403523673. The reversal of 22403523649 is 94632530422.

It can be written as a sum of positive squares in 8 ways, for example, as 385415424 + 22018108225 = 19632^2 + 148385^2 .

It is not a de Polignac number, because 22403523649 - 2¹ = 22403523647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22403523647) 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, 2606539 + ... + 2615119.

It is an arithmetic number, because the mean of its divisors is an integer number (1516417945).

Almost surely, 2^22403523649 is an apocalyptic number.

It is an amenable number.

22403523649 is a deficient number, since it is larger than the sum of its proper divisors (1859163471).

22403523649 is a wasteful number, since it uses less digits than its factorization.

22403523649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9700.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 22403523649 in words is "twenty-two billion, four hundred three million, five hundred twenty-three thousand, six hundred forty-nine".