20474771730 has 64 divisors (see below), whose sum is σ = 56174128128. Its totient is φ = 4678718400.

The previous prime is 20474771699. The next prime is 20474771747. The reversal of 20474771730 is 3717747402.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 966229 + ... + 987191.

It is an arithmetic number, because the mean of its divisors is an integer number (877720752).

Almost surely, 2^20474771730 is an apocalyptic number.

20474771730 is an abundant number, since it is smaller than the sum of its proper divisors (35699356398).

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

20474771730 is a wasteful number, since it uses less digits than its factorization.

20474771730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25631.

The product of its (nonzero) digits is 230496, while the sum is 42.

The spelling of 20474771730 in words is "twenty billion, four hundred seventy-four million, seven hundred seventy-one thousand, seven hundred thirty".