20350133205240 has 64 divisors (see below), whose sum is σ = 61910264424960. Its totient is φ = 5350269760640.

The previous prime is 20350133205191. The next prime is 20350133205253. The reversal of 20350133205240 is 4250233105302.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20350133205198 and 20350133205207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1194248124 + ... + 1194265163.

It is an arithmetic number, because the mean of its divisors is an integer number (967347881640).

Almost surely, 2^{20350133205240} is an apocalyptic number.

20350133205240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20350133205240 is an abundant number, since it is smaller than the sum of its proper divisors (41560131219720).

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

20350133205240 is a wasteful number, since it uses less digits than its factorization.

20350133205240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388513372 (or 2388513368 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The spelling of 20350133205240 in words is "twenty trillion, three hundred fifty billion, one hundred thirty-three million, two hundred five thousand, two hundred forty".