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79819953119 = 1971117736251
BaseRepresentation
bin100101001010110100…
…0111101001111011111
321122000210022202002222
41022111220331033133
52301432401444434
6100400242335555
75524004256404
oct1122550751737
9248023282088
1079819953119
1130940312205
121357765a5bb
1376b0a457ba
143c12cac2ab
1521227a672e
hex1295a3d3df

79819953119 has 8 divisors (see below), whose sum is σ = 80234521488. Its totient is φ = 79405480000.

The previous prime is 79819953053. The next prime is 79819953121. The reversal of 79819953119 is 91135991897.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-79819953119 is a prime.

It is a super-2 number, since 2×798199531192 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79819953019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2183744 + ... + 2219994.

It is an arithmetic number, because the mean of its divisors is an integer number (10029315186).

Almost surely, 279819953119 is an apocalyptic number.

79819953119 is a deficient number, since it is larger than the sum of its proper divisors (414568369).

79819953119 is a wasteful number, since it uses less digits than its factorization.

79819953119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47625.

The product of its digits is 5511240, while the sum is 62.

The spelling of 79819953119 in words is "seventy-nine billion, eight hundred nineteen million, nine hundred fifty-three thousand, one hundred nineteen".

Divisors: 1 197 11177 36251 2201869 7141447 405177427 79819953119