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1988369156160 = 2635525570591
BaseRepresentation
bin11100111011110100000…
…010011000100001000000
321001002022212100202200000
4130323310002120201000
5230034140000444120
64121235535400000
7263440432651242
oct34736402304100
97032285322600
101988369156160
116a7298608752
12281438983000
1311566ba3205a
146c347cc8092
1536ac6d7b990
hex1cef4098840

1988369156160 has 168 divisors, whose sum is σ = 7092463961856. Its totient is φ = 530231754240.

The previous prime is 1988369156159. The next prime is 1988369156177. The reversal of 1988369156160 is 616519638891.

1988369156160 is a `hidden beast` number, since 1 + 9 + 8 + 8 + 3 + 6 + 9 + 1 + 5 + 616 + 0 = 666.

It is a super-2 number, since 2×19883691561602 (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12707536 + ... + 12863055.

It is an arithmetic number, because the mean of its divisors is an integer number (42217047392).

Almost surely, 21988369156160 is an apocalyptic number.

1988369156160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1988369156160 is an abundant number, since it is smaller than the sum of its proper divisors (5104094805696).

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

1988369156160 is an equidigital number, since it uses as much as digits as its factorization.

1988369156160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25570623 (or 25570601 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 1988369156160 in words is "one trillion, nine hundred eighty-eight billion, three hundred sixty-nine million, one hundred fifty-six thousand, one hundred sixty".