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12987485154394 = 2167386031007297
BaseRepresentation
bin1011110011111110001001…
…1100000110110001011010
31200222120222011121111112021
42330333202130012301122
53200241332144420034
643342211320005054
72510212663230142
oct274774234066132
950876864544467
1012987485154394
114157a63871a93
12155908a60078a
13732939c7152a
1432c851ca9922
15177c7ab196b4
hexbcfe2706c5a

12987485154394 has 16 divisors (see below), whose sum is σ = 19598408923968. Its totient is φ = 6454684271872.

The previous prime is 12987485154367. The next prime is 12987485154431. The reversal of 12987485154394 is 49345158478921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12389754 + ... + 13397050.

It is an arithmetic number, because the mean of its divisors is an integer number (1224900557748).

Almost surely, 212987485154394 is an apocalyptic number.

12987485154394 is a deficient number, since it is larger than the sum of its proper divisors (6610923769574).

12987485154394 is a wasteful number, since it uses less digits than its factorization.

12987485154394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046069.

The product of its digits is 348364800, while the sum is 70.

The spelling of 12987485154394 in words is "twelve trillion, nine hundred eighty-seven billion, four hundred eighty-five million, one hundred fifty-four thousand, three hundred ninety-four".

Divisors: 1 2 167 334 38603 77206 1007297 2014594 6446701 12893402 168218599 336437198 38884686091 77769372182 6493742577197 12987485154394