20513356435460 has 48 divisors (see below), whose sum is σ = 49232321873280. Its totient is φ = 7033112716800.

The previous prime is 20513356435459. The next prime is 20513356435463. The reversal of 20513356435460 is 6453465331502.

It is not an unprimeable number, because it can be changed into a prime (20513356435463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40798271 + ... + 41298009.

It is an arithmetic number, because the mean of its divisors is an integer number (1025673372360).

Almost surely, 2^{20513356435460} is an apocalyptic number.

20513356435460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20513356435460 is an abundant number, since it is smaller than the sum of its proper divisors (28718965437820).

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

20513356435460 is a wasteful number, since it uses less digits than its factorization.

20513356435460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792956 (or 792954 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 20513356435460 in words is "twenty trillion, five hundred thirteen billion, three hundred fifty-six million, four hundred thirty-five thousand, four hundred sixty".