20099608346720 has 384 divisors, whose sum is σ = 56540576074752. Its totient is φ = 6609176985600.

The previous prime is 20099608346689. The next prime is 20099608346809. The reversal of 20099608346720 is 2764380699002.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1029103355 + ... + 1029122885.

It is an arithmetic number, because the mean of its divisors is an integer number (147241083528).

Almost surely, 2^{20099608346720} is an apocalyptic number.

20099608346720 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 20099608346720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28270288037376).

20099608346720 is an abundant number, since it is smaller than the sum of its proper divisors (36440967728032).

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

20099608346720 is a wasteful number, since it uses less digits than its factorization.

20099608346720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19974 (or 19966 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 20099608346720 in words is "twenty trillion, ninety-nine billion, six hundred eight million, three hundred forty-six thousand, seven hundred twenty".