20619968886720 has 896 divisors, whose sum is σ = 85588483737600. Its totient is φ = 4633187143680.

The previous prime is 20619968886703. The next prime is 20619968886721. The reversal of 20619968886720 is 2768886991602.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20619968886721) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 288998250 + ... + 289069590.

Almost surely, 2^{20619968886720} is an apocalyptic number.

20619968886720 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 20619968886720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42794241868800).

20619968886720 is an abundant number, since it is smaller than the sum of its proper divisors (64968514850880).

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

20619968886720 is an frugal number, since it uses more digits than its factorization.

20619968886720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71445 (or 71417 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 72.

The spelling of 20619968886720 in words is "twenty trillion, six hundred nineteen billion, nine hundred sixty-eight million, eight hundred eighty-six thousand, seven hundred twenty".