20653465446 has 24 divisors (see below), whose sum is σ = 45183637200. Its totient is φ = 6817648176.

The previous prime is 20653465423. The next prime is 20653465447. The reversal of 20653465446 is 64456435602.

It is a happy number.

20653465446 is a `hidden beast` number, since 2 + 0 + 65 + 3 + 46 + 544 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20653465447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5568121 + ... + 5571828.

It is an arithmetic number, because the mean of its divisors is an integer number (1882651550).

Almost surely, 2^20653465446 is an apocalyptic number.

20653465446 is an abundant number, since it is smaller than the sum of its proper divisors (24530171754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20653465446 is a wasteful number, since it uses less digits than its factorization.

20653465446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11140060 (or 11140057 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 20653465446 in words is "twenty billion, six hundred fifty-three million, four hundred sixty-five thousand, four hundred forty-six".