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2191605322368 = 273721110588693
BaseRepresentation
bin11111111001000101110…
…110110101001010000000
321202111220202001201122010
4133321011312311022000
5241401401430303433
64354450512012520
7314224010605200
oct37710566651200
97674822051563
102191605322368
11775500084480
122b48b8231140
1312b88a643577
1478107aca400
153c01e494e63
hex1fe45db5280

2191605322368 has 192 divisors, whose sum is σ = 7387520029920. Its totient is φ = 569248081920.

The previous prime is 2191605322327. The next prime is 2191605322399. The reversal of 2191605322368 is 8632235061912.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×21916053223682 (a number of 25 digits) contains 22 as substring.

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

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, 5087371 + ... + 5501322.

Almost surely, 22191605322368 is an apocalyptic number.

2191605322368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2191605322368 is an abundant number, since it is smaller than the sum of its proper divisors (5195914707552).

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

2191605322368 is a wasteful number, since it uses less digits than its factorization.

2191605322368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588735 (or 10588716 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 2191605322368 in words is "two trillion, one hundred ninety-one billion, six hundred five million, three hundred twenty-two thousand, three hundred sixty-eight".