20003512635140 has 12 divisors (see below), whose sum is σ = 42007376533836. Its totient is φ = 8001405054048.

The previous prime is 20003512635121. The next prime is 20003512635151. The reversal of 20003512635140 is 4153621530002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7211716895296 + 12791795739844 = 2685464^2 + 3576562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20003512635097 and 20003512635106.

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, 500087815859 + ... + 500087815898.

It is an arithmetic number, because the mean of its divisors is an integer number (3500614711153).

Almost surely, 2^{20003512635140} is an apocalyptic number.

20003512635140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20003512635140 is an abundant number, since it is smaller than the sum of its proper divisors (22003863898696).

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

20003512635140 is a wasteful number, since it uses less digits than its factorization.

20003512635140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000175631766 (or 1000175631764 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 20003512635140 in words is "twenty trillion, three billion, five hundred twelve million, six hundred thirty-five thousand, one hundred forty".