20130035056 has 20 divisors (see below), whose sum is σ = 39008397400. Its totient is φ = 10063351872.

The previous prime is 20130034957. The next prime is 20130035113. The reversal of 20130035056 is 65053003102.

It is a happy number.

It is a super-2 number, since 2×20130035056² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20130035056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1326 + ... + 200653.

It is an arithmetic number, because the mean of its divisors is an integer number (1950419870).

Almost surely, 2^20130035056 is an apocalyptic number.

It is an amenable number.

20130035056 is a deficient number, since it is larger than the sum of its proper divisors (18878362344).

20130035056 is a wasteful number, since it uses less digits than its factorization.

20130035056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208216 (or 208210 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 20130035056 its reverse (65053003102), we get a palindrome (85183038158).

The spelling of 20130035056 in words is "twenty billion, one hundred thirty million, thirty-five thousand, fifty-six".