20563729470 has 32 divisors (see below), whose sum is σ = 54836612640. Its totient is φ = 5483661120.

The previous prime is 20563729429. The next prime is 20563729471. The reversal of 20563729470 is 7492736502.

20563729470 is a `hidden beast` number, since 2 + 0 + 5 + 637 + 2 + 9 + 4 + 7 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20563729471) 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, 38080711 + ... + 38081250.

It is an arithmetic number, because the mean of its divisors is an integer number (1713644145).

Almost surely, 2^20563729470 is an apocalyptic number.

20563729470 is an abundant number, since it is smaller than the sum of its proper divisors (34272883170).

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

20563729470 is a wasteful number, since it uses less digits than its factorization.

20563729470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76161977 (or 76161971 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 20563729470 in words is "twenty billion, five hundred sixty-three million, seven hundred twenty-nine thousand, four hundred seventy".