20310472506 has 32 divisors (see below), whose sum is σ = 42416120448. Its totient is φ = 6471365120.

The previous prime is 20310472489. The next prime is 20310472547. The reversal of 20310472506 is 60527401302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154690 + ... + 254066.

It is an arithmetic number, because the mean of its divisors is an integer number (1325503764).

Almost surely, 2^20310472506 is an apocalyptic number.

20310472506 is an abundant number, since it is smaller than the sum of its proper divisors (22105647942).

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

20310472506 is a wasteful number, since it uses less digits than its factorization.

20310472506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100886.

The product of its (nonzero) digits is 10080, while the sum is 30.

Adding to 20310472506 its reverse (60527401302), we get a palindrome (80837873808).

The spelling of 20310472506 in words is "twenty billion, three hundred ten million, four hundred seventy-two thousand, five hundred six".