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12689339799642 = 23112711113163737
BaseRepresentation
bin1011100010100111011110…
…0101110101100001011010
31122221002101220112012202220
42320221313211311201122
53130400231442042032
642553222514204510
72446526445434502
oct270516745654132
948832356465686
1012689339799642
114052578563160
12150b342283736
137107a445655c
1431c24b1c6a02
1517012b1aa12c
hexb8a7797585a

12689339799642 has 64 divisors (see below), whose sum is σ = 27790926501888. Its totient is φ = 3830661072000.

The previous prime is 12689339799641. The next prime is 12689339799707. The reversal of 12689339799642 is 24699793398621.

It is a super-2 number, since 2×126893397996422 (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12689339799641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199057198 + ... + 199120934.

It is an arithmetic number, because the mean of its divisors is an integer number (434233226592).

Almost surely, 212689339799642 is an apocalyptic number.

12689339799642 is an abundant number, since it is smaller than the sum of its proper divisors (15101586702246).

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

12689339799642 is a wasteful number, since it uses less digits than its factorization.

12689339799642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75155.

The product of its digits is 1904684544, while the sum is 78.

The spelling of 12689339799642 in words is "twelve trillion, six hundred eighty-nine billion, three hundred thirty-nine million, seven hundred ninety-nine thousand, six hundred forty-two".