20513351105150 has 24 divisors (see below), whose sum is σ = 38410905774600. Its totient is φ = 8150271040160.

The previous prime is 20513351105131. The next prime is 20513351105179. The reversal of 20513351105150 is 5150115331502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1376727524 + ... + 1376742423.

It is an arithmetic number, because the mean of its divisors is an integer number (1600454407275).

Almost surely, 2^{20513351105150} is an apocalyptic number.

20513351105150 is a deficient number, since it is larger than the sum of its proper divisors (17897554669450).

20513351105150 is a wasteful number, since it uses less digits than its factorization.

20513351105150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753470108 (or 2753470103 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 32.

Adding to 20513351105150 its reverse (5150115331502), we get a palindrome (25663466436652).

The spelling of 20513351105150 in words is "twenty trillion, five hundred thirteen billion, three hundred fifty-one million, one hundred five thousand, one hundred fifty".