20753645748 has 48 divisors (see below), whose sum is σ = 53064431616. Its totient is φ = 6260772960.

The previous prime is 20753645701. The next prime is 20753645771. The reversal of 20753645748 is 84754635702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20753645748.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323086 + ... + 381957.

It is an arithmetic number, because the mean of its divisors is an integer number (1105508992).

Almost surely, 2^20753645748 is an apocalyptic number.

It is an amenable number.

20753645748 is an abundant number, since it is smaller than the sum of its proper divisors (32310785868).

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

20753645748 is a wasteful number, since it uses less digits than its factorization.

20753645748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705284 (or 705282 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 51.

The spelling of 20753645748 in words is "twenty billion, seven hundred fifty-three million, six hundred forty-five thousand, seven hundred forty-eight".