20729002768320 has 224 divisors, whose sum is σ = 82054546315776. Its totient is φ = 4307325235200.

The previous prime is 20729002768301. The next prime is 20729002768337. The reversal of 20729002768320 is 2386720092702.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 20729002768320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140138491 + ... + 140286330.

Almost surely, 2^{20729002768320} is an apocalyptic number.

20729002768320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20729002768320 is an abundant number, since it is smaller than the sum of its proper divisors (61325543547456).

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

20729002768320 is a wasteful number, since it uses less digits than its factorization.

20729002768320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280424859 (or 280424849 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 20729002768320 in words is "twenty trillion, seven hundred twenty-nine billion, two million, seven hundred sixty-eight thousand, three hundred twenty".