20887357747200 has 624 divisors, whose sum is σ = 79196440436736. Its totient is φ = 4757815296000.

The previous prime is 20887357747199. The next prime is 20887357747241. The reversal of 20887357747200 is 274775378802.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 630050625 + ... + 630083775.

Almost surely, 2^{20887357747200} is an apocalyptic number.

20887357747200 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 20887357747200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39598220218368).

20887357747200 is an abundant number, since it is smaller than the sum of its proper divisors (58309082689536).

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

20887357747200 is a wasteful number, since it uses less digits than its factorization.

20887357747200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33488 (or 33461 counting only the distinct ones).

The product of its (nonzero) digits is 36879360, while the sum is 60.

The spelling of 20887357747200 in words is "twenty trillion, eight hundred eighty-seven billion, three hundred fifty-seven million, seven hundred forty-seven thousand, two hundred".