20910806030 has 64 divisors (see below), whose sum is σ = 39758501376. Its totient is φ = 7907328000.

The previous prime is 20910806029. The next prime is 20910806047. The reversal of 20910806030 is 3060801902.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20910805984 and 20910806002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3956990 + ... + 3962270.

It is an arithmetic number, because the mean of its divisors is an integer number (621226584).

Almost surely, 2^20910806030 is an apocalyptic number.

20910806030 is a deficient number, since it is larger than the sum of its proper divisors (18847695346).

20910806030 is a wasteful number, since it uses less digits than its factorization.

20910806030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 20910806030 in words is "twenty billion, nine hundred ten million, eight hundred six thousand, thirty".