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1213405320296 = 231311667358849
BaseRepresentation
bin10001101010000100100…
…101111101010001101000
311022000000022011221100202
4101222010211331101220
5124340023230222141
62325233011051332
7153444213021341
oct21520445752150
94260008157322
101213405320296
114286697406a4
121771baba0b48
138a5679417b0
1442a2ca410c8
152186ba0249b
hex11a8497d468

1213405320296 has 16 divisors (see below), whose sum is σ = 2450145358500. Its totient is φ = 560033224704.

The previous prime is 1213405320289. The next prime is 1213405320331. The reversal of 1213405320296 is 6920235043121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1189159716196 + 24245604100 = 1090486^2 + 155710^2 .

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, 5833679321 + ... + 5833679528.

Almost surely, 21213405320296 is an apocalyptic number.

It is an amenable number.

1213405320296 is an abundant number, since it is smaller than the sum of its proper divisors (1236740038204).

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

1213405320296 is a wasteful number, since it uses less digits than its factorization.

1213405320296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11667358868 (or 11667358864 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 1213405320296 in words is "one trillion, two hundred thirteen billion, four hundred five million, three hundred twenty thousand, two hundred ninety-six".

Divisors: 1 2 4 8 13 26 52 104 11667358849 23334717698 46669435396 93338870792 151675665037 303351330074 606702660148 1213405320296