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80761563412 = 2220190390853
BaseRepresentation
bin100101100110111000…
…0111010100100010100
321201110102010111121021
41023031300322210110
52310344430012122
6101033520330524
75556226651045
oct1131560724424
9251412114537
1080761563412
1131283884a32
121379aa73a44
137800b4a95a
143ca1d7a8cc
15217a2a21c7
hex12cdc3a914

80761563412 has 6 divisors (see below), whose sum is σ = 141332735978. Its totient is φ = 40380781704.

The previous prime is 80761563401. The next prime is 80761563427. The reversal of 80761563412 is 21436516708.

It can be written as a sum of positive squares in only one way, i.e., 80631009936 + 130553476 = 283956^2 + 11426^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10095195423 + ... + 10095195430.

Almost surely, 280761563412 is an apocalyptic number.

It is an amenable number.

80761563412 is a deficient number, since it is larger than the sum of its proper divisors (60571172566).

80761563412 is a wasteful number, since it uses less digits than its factorization.

80761563412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20190390857 (or 20190390855 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 80761563412 in words is "eighty billion, seven hundred sixty-one million, five hundred sixty-three thousand, four hundred twelve".

Divisors: 1 2 4 20190390853 40380781706 80761563412