20135351320 has 32 divisors (see below), whose sum is σ = 51776618400. Its totient is φ = 6903548928.

The previous prime is 20135351297. The next prime is 20135351321. The reversal of 20135351320 is 2315353102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135351321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35955705 + ... + 35956264.

It is an arithmetic number, because the mean of its divisors is an integer number (1618019325).

Almost surely, 2^20135351320 is an apocalyptic number.

20135351320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20135351320 is an abundant number, since it is smaller than the sum of its proper divisors (31641267080).

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

20135351320 is a wasteful number, since it uses less digits than its factorization.

20135351320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71911987 (or 71911983 counting only the distinct ones).

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

The spelling of 20135351320 in words is "twenty billion, one hundred thirty-five million, three hundred fifty-one thousand, three hundred twenty".