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12888765290140 = 225644438264507
BaseRepresentation
bin1011101110001110011001…
…0001101101011010011100
31200122011011012202210101121
42323203212101231122130
53142132142403241030
643225003402420324
72500116422226625
oct273434621553234
950564135683347
1012888765290140
11411a104aa6913
121541b195016a4
1372653673337c
14327b68c78a4c
151753ede9947a
hexbb8e646d69c

12888765290140 has 12 divisors (see below), whose sum is σ = 27066407109336. Its totient is φ = 5155506116048.

The previous prime is 12888765290129. The next prime is 12888765290161. The reversal of 12888765290140 is 4109256788821.

It is a happy number.

It is a super-2 number, since 2×128887652901402 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322219132234 + ... + 322219132273.

It is an arithmetic number, because the mean of its divisors is an integer number (2255533925778).

Almost surely, 212888765290140 is an apocalyptic number.

12888765290140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12888765290140 is an abundant number, since it is smaller than the sum of its proper divisors (14177641819196).

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

12888765290140 is a wasteful number, since it uses less digits than its factorization.

12888765290140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644438264516 (or 644438264514 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 61.

The spelling of 12888765290140 in words is "twelve trillion, eight hundred eighty-eight billion, seven hundred sixty-five million, two hundred ninety thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 644438264507 1288876529014 2577753058028 3222191322535 6444382645070 12888765290140