20745265484 has 12 divisors (see below), whose sum is σ = 36305900400. Its totient is φ = 10372151088.

The previous prime is 20745265483. The next prime is 20745265517. The reversal of 20745265484 is 48456254702.

It is not an unprimeable number, because it can be changed into a prime (20745265483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12824 + ... + 204095.

It is an arithmetic number, because the mean of its divisors is an integer number (3025491700).

Almost surely, 2^20745265484 is an apocalyptic number.

It is an amenable number.

20745265484 is a deficient number, since it is larger than the sum of its proper divisors (15560634916).

20745265484 is a wasteful number, since it uses less digits than its factorization.

20745265484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240832 (or 240830 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 47.

The spelling of 20745265484 in words is "twenty billion, seven hundred forty-five million, two hundred sixty-five thousand, four hundred eighty-four".