20460420810 has 24 divisors (see below), whose sum is σ = 53197094340. Its totient is φ = 5456112192.

The previous prime is 20460420767. The next prime is 20460420899. The reversal of 20460420810 is 1802406402.

20460420810 is a `hidden beast` number, since 20 + 4 + 604 + 20 + 8 + 10 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20451002049 + 9418761 = 143007^2 + 3069^2 .

It is a super-2 number, since 2×20460420810² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113668915 + ... + 113669094.

Almost surely, 2^20460420810 is an apocalyptic number.

20460420810 is an abundant number, since it is smaller than the sum of its proper divisors (32736673530).

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

20460420810 is a wasteful number, since it uses less digits than its factorization.

20460420810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227338022 (or 227338019 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 20460420810 in words is "twenty billion, four hundred sixty million, four hundred twenty thousand, eight hundred ten".