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12543077902 = 27979386569
BaseRepresentation
bin10111010111010000…
…00010111000001110
31012101011000101011211
423223220002320032
5201142011443102
65432345405034
7622554255145
oct135350027016
935334011154
1012543077902
115357271093
12252079977a
13124b8203b4
1486dbc875c
154d62977d7
hex2eba02e0e

12543077902 has 8 divisors (see below), whose sum is σ = 19052776800. Its totient is φ = 6192152304.

The previous prime is 12543077879. The next prime is 12543077909. The reversal of 12543077902 is 20977034521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543077909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39693127 + ... + 39693442.

It is an arithmetic number, because the mean of its divisors is an integer number (2381597100).

Almost surely, 212543077902 is an apocalyptic number.

12543077902 is a deficient number, since it is larger than the sum of its proper divisors (6509698898).

12543077902 is an equidigital number, since it uses as much as digits as its factorization.

12543077902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79386650.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 12543077902 in words is "twelve billion, five hundred forty-three million, seventy-seven thousand, nine hundred two".

Divisors: 1 2 79 158 79386569 158773138 6271538951 12543077902