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15680142753854 = 2172059132239687
BaseRepresentation
bin1110010000101101000101…
…0101101100000000111110
32001112000012002221011012112
43210023101111230000332
54023400413021110404
653203205205134022
73205565361206165
oct344132125540076
961460162834175
1015680142753854
114aa5a02893247
121912b000ba312
13899828744717
143c2ccc8543dc
151c2d2329d56e
hexe42d156c03e

15680142753854 has 16 divisors (see below), whose sum is σ = 24903888200928. Its totient is φ = 7378851578112.

The previous prime is 15680142753853. The next prime is 15680142753901. The reversal of 15680142753854 is 45835724108651.

It is a junction number, because it is equal to n+sod(n) for n = 15680142753793 and 15680142753802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15680142753853) 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, 5881199 + ... + 8120885.

It is an arithmetic number, because the mean of its divisors is an integer number (1556493012558).

Almost surely, 215680142753854 is an apocalyptic number.

15680142753854 is a deficient number, since it is larger than the sum of its proper divisors (9223745447074).

15680142753854 is a wasteful number, since it uses less digits than its factorization.

15680142753854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445619.

The product of its (nonzero) digits is 32256000, while the sum is 59.

The spelling of 15680142753854 in words is "fifteen trillion, six hundred eighty billion, one hundred forty-two million, seven hundred fifty-three thousand, eight hundred fifty-four".

Divisors: 1 2 17 34 205913 411826 2239687 3500521 4479374 7001042 38074679 76149358 461180669231 922361338462 7840071376927 15680142753854