20147505467700 has 216 divisors, whose sum is σ = 64141699828192. Its totient is φ = 4853865035520.

The previous prime is 20147505467689. The next prime is 20147505467743. The reversal of 20147505467700 is 776450574102.

It is a self number, because there is not a number n which added to its sum of digits gives 20147505467700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7445787 + ... + 9784413.

Almost surely, 2^{20147505467700} is an apocalyptic number.

20147505467700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20147505467700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32070849914096).

20147505467700 is an abundant number, since it is smaller than the sum of its proper divisors (43994194360492).

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

20147505467700 is a wasteful number, since it uses less digits than its factorization.

20147505467700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338751 (or 2338697 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 48.

The spelling of 20147505467700 in words is "twenty trillion, one hundred forty-seven billion, five hundred five million, four hundred sixty-seven thousand, seven hundred".