20305553151320 has 16 divisors (see below), whose sum is σ = 45687494590560. Its totient is φ = 8122221260512.

The previous prime is 20305553151313. The next prime is 20305553151379. The reversal of 20305553151320 is 2315135550302.

It is a congruent number.

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, 253819414352 + ... + 253819414431.

It is an arithmetic number, because the mean of its divisors is an integer number (2855468411910).

Almost surely, 2^{20305553151320} is an apocalyptic number.

20305553151320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20305553151320 is an abundant number, since it is smaller than the sum of its proper divisors (25381941439240).

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

20305553151320 is a wasteful number, since it uses less digits than its factorization.

20305553151320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507638828794 (or 507638828790 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 35.

The spelling of 20305553151320 in words is "twenty trillion, three hundred five billion, five hundred fifty-three million, one hundred fifty-one thousand, three hundred twenty".